1. An extrinsic muscle of the appendicular skeleton (for example the upper extre

Question

1. An extrinsic muscle of the appendicular skeleton (for example the upper extremity) would originate on the ________ and insert on the________.

axial skeleton / appendicular skeleton

appendicular skeleton / axial skeleton

appendicular skeleton / appendicular skeleton

axial skeleton / axial skeleton

2. In the male, the pelvic diaphragm separates the:

deep perineal pouch from the superficial perineal pouch

lesser and greater sciatic notches

perineum from the ischiorectal fossa

pelvis from the ischiorectal fossa

true pelvis from the false pelvis

3. The muscles in the liac region _________________________________.

cross anterior to the hip joint and therefore are limited to flexion of the thigh

have actions on both the pelvis and hip joint

have a common insertion onto the trochanters

when denervated cause pelvic tilt in the ventral plane

4. What are the spinal segments and motor functions of the sciatic nerve?

a. L1-5; Thigh flexion via the quadriceps femoris that are innervated  by the sciatic nerve itself before it dividies into the tibial and common peroneal nerve.

b. L4, 5, S1-3; Leg flexion at the knee via the hamstring muscles, semitendinosus, semimembranosus, and biceps femoris) that are innervated by the sciatic nerve itself before it dividies into the tibial and common peroneal nerve.

c. S2,3,4; Thigh extension by innervating the gluteus muscles before descending into the posterior thigh.

d. L6, 7, S1-3; Leg flexion at the knee via the hamstring muscles, semitendinosus, semimembranosus, and biceps femoris) that are innervated by the sciatic nerve itself before it dividies into the tibial and common peroneal nerve.

axial skeleton / appendicular skeleton

appendicular skeleton / axial skeleton

appendicular skeleton / appendicular skeleton

axial skeleton / axial skeleton

Explanation / Answer

Question 1

Answer A (Axial skeleton / appendicular skeleton)

The intrinsic muscle originates and inserts alone in appendicular skeleton and axial skeleton. extrinsic muscle originates axial skeleton and inserts into an appendicular skeleton.

Question 2

Answer E (true pelvis from the false pelvis?)

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