Spinal Cord

Question 1

The sensory(afferent) nerves: “A delta” carry:

Answer 1

cold/pressure, acute “fast” pain impulses

Question 2

Sensory nerves “C” unmyelinated fibers

Answer 2

steady, dull, constant pain

Question 3

The spinothalamic tract that transmits pain and temperature crosses where:

Answer 3

Right where it enters on the spine and ascends up the same side

Question 4

The medial lemniscus tract that ascends up the spinal cord and crosses at brain stem transmits what info:

Answer 4

vibration, pressure

Question 5

How would you see a defect in lower motor neuron while performing a stretch reflex test in knee/elbow?

Answer 5

slow or depressed reflex

Question 6

If a stretch reflex test gave you hyperactive response in knee/elbow for example, this would indicate what defect:

Answer 6

an upper motor neuron

Question 7

Problems in upper motor neuron or pyramidal system or corticospinal tract?

Answer 7

1. weakness 2. hyperactivity of tendon reflex 3. spasticity 4. Babinski sign (toes go up rather than down)

Question 8

problems with extra pyramidal disease include these 5:

Answer 8

akinesia, rigidity, chorea, athetosis, tremor