Nerves and Plexus

Nerves that bring impulses from receptors in the skin, joints, muscles, and other peripheral aspects of the body to the central nervous system are known as

• sensory

• motor

• interneurons

The connective tissue that sheaths around a myelinated axon is called a:

• epineurium

• perineurium

• endoneurium

• Schwann cell

What is the Spinal Cord Segment for the Femoral and Obturator nerves?

• L4, L5, S1, S2

• C6, C7, C8, T1

• L4, L5, S1, S2, S3

• L2, L3, L4

Which peripheral nerve of the sacral plexus innervates the hamstring muscles?

• Femoral nerve

• Obturator nerve

• Sciatic Nerve

• Tibial nerve

• Common peroneal nerve

Which of the following muscles are innervated by the femoral nerve (L2-L4)?

• sartorius

• adductor longus

• iliacus

• rectus femoris

Is the map shown a dermatomal or

a peripheral nerve cutaneous map?

• Dermatomal

• Peripheral nerve cutaneous

Name the peripheral nerve that supplies the area of skin pointed by the pink arrow

• obturator nerve

• lateral femoral cutaneous nerve

• genitofemoral nerve

• intermediate and medial femoral cutaneous nerves

What is a neural plexus?

• A type of spinal nerve that goes to the lower half of your body

• An intertwining network of nerves

  derived from several spinal nerves,

  that give rise to peripheral nerves

  that supply the structures of the arm

  or leg

• A type of spinal nerve that contains only motor neuron fibers

Which branch of the nervous system innervates

skeletal muscles for voluntary

and reflexive movements?

• somatic

• autonomic

• sympathetic

• parasympathetic

What is a dermatome?

• an unilateral area of skin supplied

  by a single spinal nerve

• a muscle/muscle group supplied by a single spinal nerve

• an unilateral area of skin supplied by a single peripheral nerve

• a muscle/muscle group supplied by a single peripheral nerve