Inner Ear Structure

The inner ear, the innermost part of the ear, plays a crucial role in hearing and balance. It consists of tiny bony structures filled with fluid. As sound waves travel from the outer to the inner ear, they create waves in the fluid of the inner ear, which in turn moves the tiny hairs in the ear that send sound or movement signals to the brain. Problems with this part of the ear can result in hearing loss and balance issues.

The inner ear is made up of the bony labyrinth and membranous labyrinth. The bony labyrinth comprises three components:

1. Cochlea: The cochlea is made of a hollow bone shaped like a snail and divided into two chambers by a membrane. The chambers are full of fluid, which vibrates when sound comes in and causes the 30,000 tiny hairs lining the membrane to vibrate and send electrical impulses (sound signals) to the brain. The cochlea is about 9 millimeters wide at its widest point, and about 5 millimeters tall. If it could be uncoiled, the cochlea would be about 30 millimeters long.

2. Semicircular Canals: Also known as the labyrinthine, the semicircular canals rest on top of the cochlea, connected by the vestibule. There are three of them, and they line up at 90-degree angles to one another, which allows the brain to know which direction the head is moving. Like the cochlea, these canals are filled with fluid. They also contain small calcium crystals and tiny hairs that sense the movement of the fluid.

3. Vestibule: The vestibule is the central part of the bony labyrinth. It is separated from the middle ear by the oval window, and communicates anteriorly with the cochlea and posteriorly with the semicircular canals.

Inside the bony labyrinth lies the membranous labyrinth, which is also made up of three parts:

1. Cochlear Duct: This triangle-shaped duct is located inside the bony labyrinth and creates two canals that sit above and below it. These two canals—the scala vestibuli above the duct and the scala tympani below it—are separated from the main duct by membranes. The membrane between the cochlear duct and the scala tympani—also known as the basilar membrane—is where the primary hearing organ, the Organ of Corti, is located. The upper membrane is called Reissner’s membrane, which helps control the flow of fluid from the duct to the scala vestibuli.

2. Semicircular Ducts: This is where fluid, called endolymph, changes speed and direction when you move your head. Sensory receptors in these ducts detect this change and send information to your brain to help you maintain balance.

The inner ear is the last stop that sound waves make in a carefully orchestrated journey that starts from your outer ear. These waves travel from your outer ear through your middle ear to your inner ear. In the inner ear, the sound waves are converted into electrical energy, which your hearing nerve delivers to your brain as sound, making it possible for you to hear. At the same time, your inner ear monitors your movements, alerting your brain to changes so your brain can let your body know what to do to stay balanced..

Inner Ear Structure Diagram - Inner Ear Structure Chart - Human anatomy diagrams and charts explained. This anatomy system diagram depicts Inner Ear Structure with parts and labels. Best diagram to help learn about health, human body and medicine.

Inner Ear Structure

Internal Structure Of Human Stomach Visual

The human stomach, a key organ in the digestive system, is a complex structure with several distinct regions and layers. It plays a crucial role in the digestion of food and absorption of nutrients.

Location and Structure

The stomach is located in the upper abdomen on the left side of the body. It is a J-shaped organ that spans the region between the cardiac and pyloric orifices of the gastrointestinal tract. The stomach’s convex lateral surface is known as the greater curvature, while the concave medial border is the lesser curvature.

Parts of the Stomach

The stomach comprises four major regions:
1. Cardia: The area around the opening where the esophagus connects to the stomach.
2. Fundus: The dome-shaped part located to the left of the cardia.
3. Body: The main, central region of the stomach.
4. Pylorus: The lower part of the stomach that connects to the duodenum.

Layers of the Stomach

The stomach wall consists of several layers:
1. Mucosa: The innermost layer, which produces enzymes and acids for digestion.
2. Submucosa: Contains connective tissue, blood vessels, lymph vessels, and nerve cells.
3. Muscularis Externa: The primary muscle of the stomach, responsible for churning and mixing food.
4. Serosa: The outermost layer, a membrane that covers the stomach.

Function of the Stomach

The stomach’s primary function is to digest food and send it to the small intestine. It temporarily stores food, contracts and relaxes to mix and break down food, and produces enzymes and other specialized cells to digest food. The stomach works in conjunction with the rest of the gastrointestinal tract to break down food and liquid, absorb nutrients and water, and expel waste products of digestion through the large intestine.

Blood Supply and Innervation

The stomach receives its blood supply mainly from the celiac trunk. Innervation is provided via the vagus nerves and the celiac plexus.

Microscopic Anatomy

The inner part of the stomach lining, the gastric mucosa, consists of an outer layer of column-shaped cells, a lamina propria, and a thin layer of smooth muscle called the muscularis mucosa. Beneath the mucosa lies the submucosa, consisting of fibrous connective tissue.

In conclusion, the human stomach is a complex organ with a detailed internal structure. Its various parts and layers work together to perform the essential function of digesting food and absorbing nutrients, making it a vital component of the human digestive system..

Internal Structure Of Human Stomach Visual Diagram - Internal Structure Of Human Stomach Visual Chart - Human anatomy diagrams and charts explained. This anatomy system diagram depicts Internal Structure Of Human Stomach Visual with parts and labels. Best diagram to help learn about health, human body and medicine.

Internal Structure Of Human Stomach Visual

Virus Cell Structure

Virus Cell Structure

A virus is a tiny, infectious particle that can reproduce only by infecting a host cell. Viruses are much smaller than bacteria and consist of a single- or double-stranded nucleic acid (DNA or RNA) surrounded by a protein shell called a capsid. Some viruses also have an outer envelope composed of lipids and proteins.

Key Components of a Virus

1. Nucleic Acid Genome: A virus is made up of a DNA or RNA genome. This genome is the genetic material of the virus and contains the information needed for the virus to replicate.

2. Protein Capsid: The genome is enclosed within a protective protein coat called a capsid. The capsid is made from proteins that are encoded by viral genes within their genome. The shape of the capsid may vary from one type of virus to another.

3. Lipid Envelope: Many animal viruses also contain a lipid envelope. The envelope is made from portions of the host’s cell membrane. It surrounds the capsid and helps protect the virus from the host’s immune system. The envelope may also have receptor molecules that can bind with host cells, making it easier for the virus to infect the cells.

Types of Viruses Based on Structure

1. Helical Viruses: Helical capsids are made up of a single type of protein subunit stacked around a central axis to form a helical structure. This arrangement results in rod-shaped or filamentous virions. An example of a helical virus is the tobacco mosaic virus.

2. Icosahedral Viruses: Icosahedral capsid symmetry gives viruses a spherical appearance at low magnification, but the protein subunits are actually arranged in a regular geometrical pattern. They are not truly spherical.

Virus Reproduction

Viruses reproduce by infecting their host cells and reprogramming them to become virus-making “factories”. They “commandeer” the host cell and use its resources to make more viruses.

Conclusion

Viruses are unique entities that straddle the line between living and non-l

Virus Cell Structure Diagram - Virus Cell Structure Chart - Human anatomy diagrams and charts explained. This anatomy system diagram depicts Virus Cell Structure with parts and labels. Best diagram to help learn about health, human body and medicine.

Virus Cell Structure

Heart Structure Diagram Image

Heart Structure Diagram Image Diagram - Heart Structure Diagram Image Chart - Human anatomy diagrams and charts explained. This anatomy system diagram depicts Heart Structure Diagram Image with parts and labels. Best diagram to help learn about health, human body and medicine.

Heart Structure Diagram Image

Structure Of The Heart Image

The heart is the organ that helps supply blood and oxygen to all parts of the body. It is divided by a partition (or septum) into two halves, and the halves are in turn divided into four chambers. The heart is situated within the chest cavity and surrounded by a fluid-filled sac called the pericardium.
WebMD’s Heart Anatomy Page provides a detailed image of the heart and provides information on heart conditions, tests, and treatments. Skip to main content Check Your Symptoms Find A Doctor Find A Dentist Connect to Care Find Lowest Drug Prices
WebMD’s Heart Anatomy Page provides a detailed image of the heart and provides information on heart conditions, tests, and treatments. Skip to main content Check Your Symptoms Find A Doctor Find A Dentist Connect to Care Find Lowest Drug Prices

Structure Of The Heart Image Diagram - Structure Of The Heart Image Chart - Human anatomy diagrams and charts explained. This anatomy system diagram depicts Structure Of The Heart Image with parts and labels. Best diagram to help learn about health, human body and medicine.

Structure Of The Heart Image

Hip Bone Structure Image

1,047 hip bone stock photos and images available, or search for hip bone icon or hip bone 3d to find more great stock photos and pictures.
Bony Structures of the Hip The hip is formed where the thigh bone (femur) meets the three bones that make up the pelvis: the ilium, the pubis (pubic bone) and the ischium. These three bones converge to form the acetabulum, a deep socket on the outer edge of the pelvis.
Bony Structures of the Hip The hip is formed where the thigh bone (femur) meets the three bones that make up the pelvis: the ilium, the pubis (pubic bone) and the ischium. These three bones converge to form the acetabulum, a deep socket on the outer edge of the pelvis.

Hip Bone Structure Image Diagram - Hip Bone Structure Image Chart - Human anatomy diagrams and charts explained. This anatomy system diagram depicts Hip Bone Structure Image with parts and labels. Best diagram to help learn about health, human body and medicine.

Hip Bone Structure Image

Structure Of The Cardiovascular System Image

Cardiovascular System: Structure & Function. The cardiovascular system or circulatory system is a system which moves nutrients, gases and wastes between cells, helps fight diseases, and transports blood throughout the body (Circulatory System). The main components of the human cardiovascular system include the heart, blood,…
Cardiovascular system – Histology 10 Cardiovascular system Blood circulates throughout the body in blood vessels, propelled by the pumping action of the heart. Blood vessels form a continuous path for blood flow that starts and ends at the heart.
Cardiovascular system – Histology 10 Cardiovascular system Blood circulates throughout the body in blood vessels, propelled by the pumping action of the heart. Blood vessels form a continuous path for blood flow that starts and ends at the heart.

Structure Of The Cardiovascular System Image Diagram - Structure Of The Cardiovascular System Image Chart - Human anatomy diagrams and charts explained. This anatomy system diagram depicts Structure Of The Cardiovascular System Image with parts and labels. Best diagram to help learn about health, human body and medicine.

Structure Of The Cardiovascular System Image

Structure Of The Liver Image

A layer of fibrous tissue called Glisson’s capsule covers the outside of the liver. This capsule is further covered by the peritoneum, a membrane that forms the lining of the abdominal cavity. This helps hold the liver in place and protects it from physical damage. Unlike most organs, the liver has two major sources of blood.
4,742 human liver anatomy stock photos and images available, or start a new search to explore more stock photos and images.
4,742 human liver anatomy stock photos and images available, or start a new search to explore more stock photos and images.

Structure Of The Liver Image Diagram - Structure Of The Liver Image Chart - Human anatomy diagrams and charts explained. This anatomy system diagram depicts Structure Of The Liver Image with parts and labels. Best diagram to help learn about health, human body and medicine.

Structure Of The Liver Image

Diagram Of Bone Structure Image

Microscopic Structure of Bones. The skeleton makes up about 30-40% of an adult’s body mass. The skeleton’s mass is made up of nonliving bone matrix and many tiny bone cells. Roughly half of the bone matrix’s mass is water, while the other half is collagen protein and solid crystals of calcium carbonate and calcium phosphate.
5,814 male human anatomy diagram stock photos and images available, or start a new search to explore more stock photos and images. Male silhouette (contour) on white background, vector. Male, female and children’s silhouette on white background,…
5,814 male human anatomy diagram stock photos and images available, or start a new search to explore more stock photos and images. Male silhouette (contour) on white background, vector. Male, female and children’s silhouette on white background,…

Diagram Of Bone Structure Image Diagram - Diagram Of Bone Structure Image Chart - Human anatomy diagrams and charts explained. This anatomy system diagram depicts Diagram Of Bone Structure Image with parts and labels. Best diagram to help learn about health, human body and medicine.

Diagram Of Bone Structure Image

Human Bone Structure Image

67,060 human bone stock photos and images available, or search for human bone marrow or human bone structure to find more great stock photos and pictures.
Abstract image human body in the form of a starry sky or space, consisting of points, lines, and shapes in the form of planets, stars and the universe. Low poly vector background. human body anatomy stock illustrations Abstract image human body in the form of a starry sky or space,…
Abstract image human body in the form of a starry sky or space, consisting of points, lines, and shapes in the form of planets, stars and the universe. Low poly vector background. human body anatomy stock illustrations Abstract image human body in the form of a starry sky or space,…

Human Bone Structure Image Diagram - Human Bone Structure Image Chart - Human anatomy diagrams and charts explained. This anatomy system diagram depicts Human Bone Structure Image with parts and labels. Best diagram to help learn about health, human body and medicine.

Human Bone Structure Image

Spine Structure Diagram Image

Spine Diagram A diagram of a human female spine showing a side view of the vertebra of the spinal cord within the the body. This is an editable EPS 10 vector illustration with CMYK color space. spinal cord diagram stock illustrations A diagram of a human female spine showing a side view of the vertebra of the spinal cord within the the body.
Browse 2,848 spinal cord diagram stock photos and images available, or search for nervous system or spine illustration to find more great stock photos and pictures. Numbering order of the vertebrae of the human spinal column. Vertebral column: cervical, thoracic and lumbar spine, sacrum and coccyx.
A retro style diagram of the human spine showing the side view with different regions and vertebrae labelled. This is an editable EPS 10 vector illustration with CMYK color space. Computer generated image of spinal column inside gray outline of man, with anatomical labeling, side view on white background.

Spine Structure Diagram Image Diagram - Spine Structure Diagram Image Chart - Human anatomy diagrams and charts explained. This anatomy system diagram depicts Spine Structure Diagram Image with parts and labels. Best diagram to help learn about health, human body and medicine.

Spine Structure Diagram Image

Body Bone Structure Image

Browse 67,060 human bone stock photos and images available, or search for human bone marrow or human bone structure to find more great stock photos and pictures.
Bone Structure. 1 Gross Anatomy of Bone. The structure of a long bone allows for the best visualization of all of the parts of a bone ( (Figure) ). A long bone has two … 2 Bone Markings. 3 Bone Cells and Tissue. 4 Compact and Spongy Bone.
Microscopic Structure of Bones. The skeleton makes up about 30-40% of an adult’s body mass. The skeleton’s mass is made up of nonliving bone matrix and many tiny bone cells. Roughly half of the bone matrix’s mass is water, while the other half is collagen protein and solid crystals of calcium carbonate and calcium phosphate.

Body Bone Structure Image Diagram - Body Bone Structure Image Chart - Human anatomy diagrams and charts explained. This anatomy system diagram depicts Body Bone Structure Image with parts and labels. Best diagram to help learn about health, human body and medicine.

Body Bone Structure Image

Muscle Structure Diagram

Anatomy of the Muscular System Chapter 10281 Figure 10-3Structure of a muscle organ. Note that the connective tissue coverings, the epimysium, perimy- sium, and endomysium, are continuous with each other and with the tendon. Note also that muscle fibers are held together by the perimysium in groups called fascicles.
Tibialis Anterior Muscle Tibialis Posterior Muscle Vastus Lateralis Muscle Vastus Medialis Muscle GENERAL Cross-Sections of Muscles of the Arm and Leg Muscle Cell Types Pronation/Supination Push/Pull Muscles Change Current View Angle Muscular System (Male View) Muscular System (Male Posterior View) Muscular System (Posterior View)
And, together with the scaffolding provided by the skeleton, muscles also determine the form and contours of our body. Contraction of individual muscle cells is ultimately re- sponsible for purposeful movement. In Chapter 11 the phys- iology of muscular contraction is discussed.

Muscle Structure Diagram Diagram - Muscle Structure Diagram Chart - Human anatomy diagrams and charts explained. This anatomy system diagram depicts Muscle Structure Diagram with parts and labels. Best diagram to help learn about health, human body and medicine.

muscle structure diagram

Lymph Node Structure Diagram

Lymph node is small, oval or bean-shaped body. It is a collection of lymphoid tissue enclosed in a connective tis­sue capsule and lying along the lymphatic stream. From the capsule, strands of tissue pass into the substance of the node and are known as the connective tissue trabeculae. In the human lymphatic nodes the trabeculae are ill-de­fined.
Lymph nodes are important structures of the lymphatic system of the thorax and abdomen. They are small, oval or kidney-shaped encapsulated centres of antigen presentation and lymphocyte activation, differentiation and proliferation. They vary in size from 0.1 to 2.5 cm in length.
The lymphoide tissues in the nodes break down materials which have been filtered off such as microorganisms, tumor cells and cells damaged by inflammation. Lymphocyte develops from the reticular and lymphoid tissue in the nodes. Antibodies and antitoxins are also formed by the cells of lymph nodes.

Lymph Node Structure Diagram Diagram - Lymph Node Structure Diagram Chart - Human anatomy diagrams and charts explained. This anatomy system diagram depicts Lymph Node Structure Diagram with parts and labels. Best diagram to help learn about health, human body and medicine.

lymph node structure diagram