Appendicular Muscles and Their Functions

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Which muscles support the organs of the pelvic cavity, flex the joints of the sacrum & coccyx, and control the opening of the urethra and anus?

Muscles of the pectoral girdle

Muscles of the abdominal cavity

Muscles of the vertebral column

Muscles of the perineal and pelvic diaphragm (correct)

In the lower limb, what is the focus of the muscles associated with the pelvic girdle and lower limb?

Strength (correct)

Flexibility

Mobility

Range of motion

Which muscles originate from the axial skeleton and insert onto bones of the pectoral girdle or arm?

Muscles of the pectoral girdle (correct)

Muscles of the abdominal cavity

Muscles of the pelvic girdle

Muscles of the vertebral column

Which group of appendicular muscles are responsible for positioning the arm?

Muscles that position the pectoral girdle Signup and view all the answers

What is the main function of the muscles associated with the pectoral girdle?

Position the arm Signup and view all the answers

What is the primary role of the pelvic girdle in relation to weight distribution?

Transfer weight from axial skeleton to lower limbs Signup and view all the answers

Which group of muscles is responsible for moving and stabilizing the vertebral column?

Muscles of the vertebral column Signup and view all the answers

What is the main function of the muscles of the perineal region and pelvic diaphragm?

Extending from the sacrum to the ischium Signup and view all the answers

Which muscles are responsible for rotating the vertebral column?

Oblique muscles Signup and view all the answers

What is the function of the Axial Musculature?

Position the head and vertebral column and aid in breathing Signup and view all the answers

Which group of muscles forms the walls of the abdominal and pelvic cavities?

Muscles of the abdominal and pelvic cavities Signup and view all the answers

What is the role of the extrinsic back muscles?

Move the pectoral girdle and ribs during respiration Signup and view all the answers

What is the primary reason why the position of the wrist affects the functioning of the hand?

Because all the muscles that flex or extend the wrist originate on the humerus, radius, or ulna. Signup and view all the answers

In the context of muscles that move the thigh, where do many of these muscles originate?

Ilium Signup and view all the answers

Why do some muscles of the forearm affect the actions of the wrist?

Because they insert on the humerus. Signup and view all the answers

Which group of pelvic muscles is responsible for moving the feet and toes?

Muscles that move the feet and toes Signup and view all the answers

What is the significance of the attachment of the pelvic girdle to the axial skeleton?

Allows for motion of the lower limbs. Signup and view all the answers

How can understanding the relationship of action lines and the axis of the knee joint help?

Predict movement of leg muscles. Signup and view all the answers