Diagrams: visual

Internal Structure Of Human Stomach Visual

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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

Ear Anatomysimple Ear Anatomy Visual

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Anatomy of the Human Ear

The human ear is a complex organ that serves two primary functions: hearing and maintaining balance. It is anatomically divided into three main parts: the outer ear, the middle ear, and the inner ear.

1. Outer Ear

The outer ear consists of the visible portion called the auricle, or pinna, and the external auditory canal. The auricle collects sound waves and guides them into the auditory canal. The inner end of the canal is closed by the tympanic membrane, commonly known as the eardrum. The function of the outer ear is to collect sound waves and guide them to the tympanic membrane.

2. Middle Ear

The middle ear is an air-filled cavity in the temporal bone. It contains a chain of three tiny bones — the malleus (hammer), incus (anvil), and stapes (stirrup), collectively known as the auditory ossicles. These bones conduct sound from the tympanic membrane to the inner ear.

3. Inner Ear

The inner ear, also known as the labyrinth, is a complex system of fluid-filled passages and cavities. It consists of two functional units: the vestibular apparatus and the cochlea. The vestibular apparatus, which includes the vestibule and semicircular canals, maintains balance. The cochlea, on the other hand, is responsible for hearing. These sensory organs are highly specialized endings of the eighth cranial nerve, also known as the vestibulocochlear nerve

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

Ear Anatomysimple Ear Anatomy Visual