Question

Which of the following statements is false?

a. movements of the thigh are accomplished by muscles anchored to the pelvic girdle
b. the chewing muscle covering the ramus of the mandible is the masseter
c. the broadest muscle of the back is the latissimus dorsi
d. the internal oblique muscles are deep to the transversus abdominis muscles

Answer 1

The false statement is 'd. the internal oblique muscles are deep to the transversus abdominis muscles.' The internal oblique muscles actually form the middle layer of the abdominal wall, and the transversus abdominis muscles are the deepest layer.

Step-by-step explanation:

To answer the question, let's go through each statement and determine whether it's true or false:

1. Movements of the thigh are accomplished by muscles anchored to the pelvic girdle - True: Several muscles that originate at or near the pelvic girdle, including the obturator internus and adductor muscles, are involved in the movement of the thigh.
2. The chewing muscle covering the ramus of the mandible is the masseter - True: The masseter is indeed the primary muscle responsible for elevation of the mandible, allowing for chewing.
3. The broadest muscle of the back is the latissimus dorsi - True: The latissimus dorsi is indeed the largest muscle of the back and is responsible for various movements, including adduction and extension of the arm.
4. The internal oblique muscles are deep to the transversus abdominis muscles - False: According to the anatomy of the abdominal wall, the internal oblique muscles constitute a middle layer, while the transversus abdominis muscles form the deepest layer.

Therefore, the statement that is false is d. the internal oblique muscles are deep to the transversus abdominis muscles.