Exam 12: Spinal Cord and Spinal Nerves

The muscles of the back contract to straighten so that you sit at a more erect posture and subsequently the muscles are suddenly stretched as you nod off.Which of the following best represents the sequence of events when you start to nod off? (1)muscles of the back are stretched (2)the muscle spindle is stretched (3)action potentials in sensory neurons of the muscle spindles increase (4)action potentials in alpha motor neurons of skeletal muscle fibers increase (5)skeletal muscle of the back contract

Match the term with the most appropriate description. -associated with withdrawal and stretch reflex

Because the stretch reflexes can be traced back along certain spinal nerve routes,

When a person hits their funny bone,they cause temporary damage to the _____ nerve.

The cross-sectional view of the spinal cord reveals white matter on the

The largest peripheral nerve in the body is the ______ nerve.

The perineurium

Initiating the withdrawal reflex in both legs at the same time would cause one to

Muscle spindles

Reciprocal innervation

-What does "B" represent?

-What does "C" represent?

The middle,thin,spider-like meninx is the

-What does "B" represent?

The sensory root of a spinal nerve is also referred to as

When someone taps you on your shoulder,they stimulate the ____ nerve.

What structure makes the dorsal root different from the ventral root?

Intercostal nerves are formed from the

Match the nerve to the correct function. -musculocutaneous nerve

-Label component "D" on the reflex arc.