CNS and PNS Jeopardy (Fall 23')

Histology

100

What is pictured in this cross section?

For an extra 100 points: There are nuclei shown in the image. The nuclei pictured are from what cell?

Myelinated nerve fibers/axons (nuclei are of Schwann cells)

200

What type of tissue is this?

Gray Matter

300

What structure arises off of the indicated structure?

Ventral Rootlets

400

This cross-section of the spinal cord has to be from what section?

For an extra 100 points: How many spinal nerves arise from this section?

For an extra 100 points: What plexus (or plexuses) arise from these spinal nerves?

Thoracic Spinal Cord (12 thoracic spinal nerves and forms NO plexuses!)

500

What is this? (Extra 100 points for its function!)

Nodes of Ranvier (allows saltatory conduction)

CNS

100

What is the name of the structure lined in pink?

For an extra 100 points: What cranial nerve(s) originate on this structure?

Cerebrum (olfactory and optic nerve)

200

What is the name for the structure that tells incoming information where to go in the brain?

For an extra 100 points: What brain region is this structure a part of?

Thalamus (part of diencephalon)

300

What is the system that is responsible for 'filtering out' non-important stimuli?

Reticular Formation (or RAS)

400

What is the name of the sunk in area that divides the parietal and temporal lobe?

Lateral Sulcus

500

What ventricle lies between the hypothalamus, epithalamus, and thalamus?

For an extra 100 points: What is the name of the area within this ventricle that will provide CSF to nourish the brain?

3rd ventricle (CSF made by choroid plexus)

PNS

100

A patient was injured in an accident and has had damage to his 8th spinal nerve. Which section of the spinal nerves was injured?

For an extra 100 points: how many spinal nerves are there in total?

Cervical Spinal Nerves (31 in total)

200

What nerve is responsible for facial sensation/movement, branching off around the eyes and the upper/lower jaw?

For an extra 100 points: where does this cranial nerve originate off of?

For an extra 100 points: what number is it?

Trigeminal nerve (5) (originates off of the pons)

300

If an individual was having trouble with gustation, what cranial nerve(s) could be damaged?

For an extra 100 points: Name the associated number(s).

Facial (7), Glossopharyngeal (9), and Vagus (10)

400

What cranial nerve(s) are ONLY motor?

For an extra 100 points: name each of their numbers.

For an extra 100 points each: name the overall functions of each.

Oculomotor (III), Trochlear (IV), Abducens (VI) (all eye movement), Accessory (XI) (head and neck movement), and Hypoglossal (XII) (speech and swallowing)

500

Density of sensory receptors in a certain area can be determined using what test?

For an extra 100 points: What division of the PNS is this testing for?

Two Point Threshold (testing for the afferent division of the PNS)

ANS

100

What do the salivary reflex, gastric reflex, micturition reflex, and defecation reflex all have in common in terms of innervation?

All autonomic and primarily parasympathetic reflexes

200

Most of organs in the body have input from the entire autonomic nervous system. What is this called?

For an extra 100 points: What term describes the relationship between the two divisions?

Dual innervation (and dynamic antagonism)

300

What is the Vagus nerve's influence on heart rate?

For an extra 100 points: this is due to innervation from which NS division?

Decreases heart rate due to parasympathetic innervation

400

The sweat reflex is innervated by what division of the ANS?

For an extra 100 points: Name some other effectors of this division of the ANS.

Sympathetic Nervous System (also innervates adrenal glands, kidneys, blood vessels, and adipose tissue)

500

Where are the 3 different places where you can find autonomic ganglia?

Sympathetic Trunk (neckline down spinal cord), Terminal ganglia (near vital organs), and intramural ganglia (within wall of vital organs)

**Note that this is a lecture question; practical just calls for knowing of autonomic ganglia in general

Spelling (Pt. 1)

100

What is this?

Dendrite(s)

200

What is this?

Hypoglossal nerve

300

What is this?

Dorsal root ganglion

400

What is this?

Trochlear nerve

500

What kind of receptors are found in this location?

Proprioceptors (only found on limbs)

Spelling (pt. 2)

100

What is this?

Pia Mater 

200

What is this?

Accessory Nerve

300

What is this?

Ventral roots 

400

What is this?

Vestibulocochlear nerve

500

What is this?

Abducens nerve