Week 3 - Spinal cord and the brain

Question 1

Define reflex(es)

Answer 1

A quick automatic nerve response

Question 2

What is a spinal reflex

Answer 2

A reflex controlled by the spinal cord without input from the brain

Question 3

What are the two spinal roots and their neurons?

Answer 3

Anterior - axons of motor neurons

posterior - axons of sensory neurons

Question 4

What are the three spinal meninges (outer to inner)

Answer 4

Dura mater
Arachnoid mater
Pia mater

Question 5

What is a tract?

Answer 5

Bundle of axons in the CNS

Question 6

Sensory neurons function?

Answer 6

Bring info into the CNS

Question 7

Motor neurons function?

Answer 7

Send commands from CNS out to peripheral effectors (outgoing)

Question 8

5 Components of a reflex arc (in order)

Answer 8

1. Sensory receptor
   
   2. Sensory neuron
   3. CNS
   4. Motor neuron
      Peripheral effector

Question 9

4 types of classification of neurons

Answer 9

1. Development
   
   2. Motor response
   3. Complexity of neural circuit
      Site of information processing

Question 10

Cerebrum Function

Answer 10

Controls higher mental functions (conscious thought, memory)

Question 11

Cerebellum Function

Answer 11

Coordinates repetitive body movements

Question 12

Thalamus Function

Answer 12

Relays and processes sensory information

Question 13

Hypothalamus

Answer 13

Emotions, hormone production, autonomic function

Question 14

Brainstem Function

Answer 14

Relays information between spinal cord and cerebrum

Question 15

Midbrain function

Answer 15

Processes sight, sound and associated reflexes

Question 16

Pons function

Answer 16

Contains tracts, relay centers

Question 17

Medulla oblongata

Answer 17

Relays sensory info, regulates autonomic functions

Question 18

4 Special sensory cortexes

Answer 18

Visual cortex
Auditory cortex
Olfactory cortex (smell)
Gustatory cortex (taste)

Question 19

4 types of brainwaves

Answer 19

Alpha
Beta
Theta
Delta