Quizizz - Chapter 13

Injury of which nerve causes footdrop?

• Common fibular

• Superior gluteal

• Obturator

• Sciatic

What is the largest nerve arising from the lumbar plexus?

• Supraclavicular

• Musculocutaneous

• Femoral

• Tibial

• Obturator

Injury of which nerve could cause paralysis of the serratus anterior muscle?

• Suprascapular

• Supraclavicular

• Musculocutaneous

• Long thoracic

Which nerve from the cervical plexus causes contraction of the diaphragm?

• Lesser occipital

• Transverse cervical

• Phrenic

• Ansa cervicalis

• Supraclavicular

Which of the following spinal tracts is incorrectly matched?

• a) Spinothalamic tract – Descending.

• b) Lateral corticospinal – Descending.

• c) Rubrospinal – Ascending.

• a and c are incorrectly matched.

• e) Vestibulospinal – Descending.

Write True or False: Intercostal nerves directly connect to the structures they supply while plexuses are networks of nerves that supply a general area of the body.

Write True or False: The posterior and anterior roots of a spinal nerve connect it to the spinal cord.

Write True or False: Spinal nerves are named and numbered according to the region and level of the vertebral column from which they arise and contain both sensory and motor axons.

Which of the following statements is incorrect?

• A monosynaptic reflex arc would involve a pathway consisting of a single sensory neuron, and a single motor neuron.

• If sensory nerve impulses enter the spinal cord on the same side from which motor impulses leave it, the reflex arc is termed contralateral.

• An intersegmental reflex arc allows stimulation of more than one effector.

• All of these statements are correct.

Which of the following statements is incorrect?

• In a stretch reflex, the sensory receptors are muscle spindles.

• The tendon reflex guards against damage to tendons by excessive stretching.

• The crossed extensor would help you to maintain your balance after a flexor reflex.

• The flexor or withdrawal reflex occurs in response to a pleasant stimulus.