Laboratory Manual for Holes Human Anatomy & Physiology Fetal Pig Version
Laboratory Manual for Holes Human Anatomy & Physiology Fetal Pig Version
14th Edition
ISBN: 9781259295645
Author: Terry R. Martin
Publisher: McGraw-Hill Education
Question
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Chapter 23, Problem F23.1A
Summary Introduction

To identify:

The muscles of the anterior right hip and thigh in the figure.

Introduction:

Around 640 skeletal muscles are present in a typical human body that is non-striated. It has voluntary control of the somatic nervous system. It provides erectness and movement to the body.

Expert Solution & Answer
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Explanation of Solution

Pictorial Representation: Figure 1 represents the anterior right hip and thigh muscles.

  Laboratory Manual for Holes Human Anatomy & Physiology Fetal Pig Version, Chapter 23, Problem F23.1A

Figure 1: Anterior right hip and thigh muscles

The anterior right hip and thigh muscles help in the movement of the leg. The different muscles are as follows: -

  1. Tensor fasciae latae: - It is a muscle of the thigh. It helps in maintaining balance to the pelvis during running, walking, and standing.
  2. Sartorius: - It is the longest muscle of the body that runs through the thigh. It provides flexibility and rotation at the hip and the knee joint.
  3. Rectus femoris: - It starts from the ilium and runs straight down the leg. It is connected to the patella and only muscle to pass the knee and the hip joint.
  4. Vastus lateralis: - It starts from the greater trochanter and lateral lip of linea aspera. It stretches the knee joint and provides stability to the patella.
  5. Vastus medialis: - It starts from the intertrochanter and medial lip of the linea aspera. It also stretches the knee joint and provides stability to the patella as its fibers are present at the end part.
  6. Psoas major: - It starts from the lumbar vertebrae and joins with the Iliacus muscle to form iliopsoas muscle. It provides flexibility to the thigh at the hip joint.
  7. Iliacus: - It starts from the iliac fossa of the pelvis and joins with psoas major to form iliopsoas muscle. It also provides flexibility to the thigh at the hip point.
  8. Adductor longus: - It is originated from the pubic body and forms the femoral triangle. It adducts the thigh at the center.
  9. Gracilis: - It is situated in the groin and starts at the pubic bone and ends at the upper medial. It adducts the hip flexes the knee.
Conclusion

Thus, the muscles of the anterior right hip and thigh are present for the movement of the leg through the hip joint and the knee joint. It provides flexibility to thighs.

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