Human Abdomen Organs With Highlighted Stomach Examined

The human abdomen is a complex structure housing several vital organs. Let’s examine these organs, with a special focus on the stomach.

1. Stomach: Located in the upper part of the abdomen, the stomach plays a crucial role in digestion. It receives food from the esophagus and breaks it down both mechanically and chemically. The stomach’s three layers – the oblique layer, the middle circular layer, and the external longitudinal layer – work together to churn food. This mechanical breakdown is complemented by chemical digestion through stomach acids, including hydrochloric acid. The stomach also stores food until it’s ready to move further along the digestive tract.

2. Liver: Situated at the top of the abdominal cavity, the liver is the body’s largest organ. It acts as a filtration system, eliminating toxins and producing bile, which aids in the digestion and absorption of fats and fat-soluble vitamins.

3. Gallbladder: This small sac beneath the liver stores extra bile produced by the liver until it’s needed in the small intestine. Bile is crucial for digesting fats, excreting cholesterol, and even has antimicrobial activity.

4. Pancreas: This gland produces enzymes that help your body digest proteins, carbohydrates, and fats. It also makes hormones that help regulate the distribution of nutrients, including sugar.

5. Small Intestine: Occupying most of the abdominal cavity, this 21-foot long tube is where the majority of digestion occurs. It breaks down fats, starches, and proteins into fatty acids, which can then be absorbed.

6. Large Intestine: Despite its name, the large intestine is shorter than the small intestine but larger in girth. It’s the last part of the digestive tract and is made up of the cecum, colon, and rectum.

7. Kidneys: Positioned behind the intestines, the kidneys contain an estimated 1 million filtering units called nephrons. They play a vital role in processing the blood before it goes into general circulation.

8. Adrenal Glands: Located on top of the kidneys, these glands synthesize and secrete different sets of hormones. These hormones help the kidneys conserve sodium and water, and also support the body’s sexual functions.

9. Ureters: These two tubes carry urine from the kidneys to the urinary bladder.

10. Ribs: The main bones in the abdominal region, the ribs protect vital internal organs.

In conclusion, the human abdomen is a marvel of biological engineering, with each organ playing a unique and vital role in maintaining the body’s overall health and functionality. The stomach, in particular, serves as a critical junction in the digestive process, preparing food for further digestion and absorption in the intestines..

Human Abdomen Organs With Highlighted Stomach Examined Diagram - Human Abdomen Organs With Highlighted Stomach Examined Chart - Human anatomy diagrams and charts explained. This anatomy system diagram depicts Human Abdomen Organs With Highlighted Stomach Examined with parts and labels. Best diagram to help learn about health, human body and medicine.

Human Abdomen Organs With Highlighted Stomach Examined

Human Leg Muscle Anatomy Examined

The human leg, a complex structure with numerous muscles, plays a pivotal role in body movement and support. The majority of leg muscles are considered long muscles, stretching great distances to move skeletal bones and facilitate body movement.

Upper Leg Muscles

The upper leg comprises the quadriceps and hamstrings. The quadriceps, the body’s strongest and leanest muscles, are major extensors of the knee. They include:

1. Vastus lateralis: The largest of the quadriceps, it extends from the top of the femur to the kneecap.
2. Vastus medialis: A teardrop-shaped muscle of the inner thigh, it attaches along the femur and down to the inner border of the kneecap.
3. Vastus intermedius: Located between the vastus medialis and the vastus lateralis at the front of the femur, it is the deepest of the quadriceps muscles.
4. Rectus femoris: This muscle attaches to the kneecap.

The hamstrings, three muscles at the back of the thigh, affect hip and knee movement. They include:

1. Biceps femoris: This long muscle flexes the knee.
2. Semimembranosus: This long muscle extends from the pelvis to the tibia.
3. Semitendinosus: This muscle extends the thigh and flexes the knee.

Lower Leg Muscles

The lower leg muscles, supported by the fibula and the tibia (shinbone), are pivotal to movement of the ankle, foot, and toes. Some of the major muscles of the calf include:

1. Gastrocnemius (calf muscle): One of the large muscles of the leg, it connects to the heel. It flexes and extends the foot, ankle, and knee.
2. Soleus: This muscle extends from the back of the knee to the heel. It is important in walking and standing.
3. Plantaris: This small, thin muscle is absent in about 10 percent of people. The gastrocnemius muscle supersedes its function.

The Achilles tendon, connecting the plantaris, gastrocnemius, and soleus muscles to the heel bone, stores the elastic energy needed for running, jumping, and other physical activity.

Functional Groups

The leg muscles are organized into three groups: anterior (dorsiflexor) group, posterior (plantar flexor) group, and lateral (fibular) group. These groups produce different movements in the ankle and foot, crucial for activities such as walking, running, and dancing.

The anterior group, including the tibialis anterior, extensor digitorum longus, fibularis tertius, and extensor hallucis longus, primarily produces dorsiflexion of the foot at the ankle joint. The posterior group, comprising the gastrocnemius, plantaris, soleus

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

Human Leg Muscle Anatomy Examined