Extra Nervous Sys. Q's Flashcards Preview

ASC171 L1,2,3 & extra stuff > Extra Nervous Sys. Q's > Flashcards

Flashcards in Extra Nervous Sys. Q's Deck (18)
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1
Q

List the glial cells in CNS

A

Astrocytes
Oligodendrocytes
Microglia
Ependymal cells

2
Q

Function of astrocytes?

A

possess receptors for neurotransmitters
Physically support neurons
induce formation of blood-brain barrier

3
Q

Function of oligodendrocytes?

A

form myelin sheath in CNS

4
Q

Function of microglia?

A

role in defence of brain (phagocytosis)

5
Q

Function of ependymal cells?

A

Line cavities of brain & spinal cord
contribute to formation of CSF
Stem cells

6
Q

Label on brain diagram the

A
frontal lobe
occipital lobe
temporal lobe
parietal lobe
cerebellum
cerebrum
brain stem
7
Q

Label on split brain diagram the

A
amygdala
hypothalamus
pons
medulla oblongata
pineal gland
pituitary gland
optic chiasm
thalamus
8
Q

Study the diagram of brain ventricles

A

DO IT

9
Q

Study/relabel sheep brain diagram pg 239 prac book 3

A

DO IT

10
Q

Label diagram of neuron

A

DO IT

11
Q

What is the function of the dendrites?

A

conduct electrical impulses TOWARD cell body

12
Q

What is the function of axons?

A

Conduct electrical impulses AWAY from cell body

13
Q

What is the function of axon hillocks?

A

interpret messages, start of AP

14
Q

Main brain regions involved in receiving info on somatic sensation?

A

Thalamus, parietal lobe (somatosensory cortex)

15
Q

Main brain regions involved in memory formation & storage and emotion?

A

prefrontal cortex, hypothalamus, amygdala

16
Q

Describe the general components of a reflex arc

A
  1. stimulus
  2. receptor
  3. sensory (afferent) pathway
  4. Interneuron (integration)
  5. Motor (efferent) pathway
  6. Effector organ-action response
17
Q

How do the two divisions of the ANS differ in their general function?

A

SNS is for ‘fight or flight’ activities e.g. dilate airways, blood vessels, increase HR, inhibit digestion

PsNS is for ‘rest & digest’ activities e.g. constrict airways, blood vessels, decrease HR, activate digestion

18
Q

Read over diagram of spinal cord

A

DO IT