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bio 264 > modules 6 and 7 > Flashcards

modules 6 and 7 Flashcards

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Biology 101 flashcards
1
Q

from soma to terminals

A

Anterograde Transport

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2
Q

from terminals to atom hillock

A

retrograde transport

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3
Q

Multipolar neurons

A

most abundant in the body

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4
Q

Difference between electrical junction and chemical junction

A

Electrical- Gap junction

Chemical- more numerous synaptic cleft

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5
Q

Snare protein

A

on membrane of vesicle and cell that fuse the membrane and the cell together causing exocytosis

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6
Q

nicotinic type two ligand gated channel

A

Neuron to neuron

Na+ channel on the post synaptic membrane

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7
Q

Nicotinic type one

A

Neuron to muscle

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8
Q

Ipsp

A

Hyperpolarization

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9
Q

Epsp

A

Depolarization

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10
Q

Temporal summation

A

many signals through one

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11
Q

spatial summation

A

Faster

signals through many different

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12
Q

if ion are close to the hillock then the signal will be

A

Strong

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13
Q

Astrocyte

A
  • provides nutrients from blood to neuron
  • forms blood brain barrier
  • Glycogen storage
  • Soak up K+ from ECF
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14
Q

Ependymal Cells

A
  • produce cerebral spinal fluid

- line the ventricles

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15
Q

Microglial cell

A

Respond to infections

-eat damage cells in the brain

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16
Q

Oligodendrocytes

A

Provides myelin sheaths for many axons at one time in the CNS

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17
Q

Satellite cells

A

Protect the soma

PNS

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18
Q

what shortens in a sarcomere

A

H-zone and the I-band

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19
Q

What does a bullet travel through before it hits your bone

A

Epimysium- fasiculous- perimysium- fascicoli-endomysium- muscle fiber

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20
Q

sarcolemma

A

muscle cell membrane

21
Q

DHPR

A

Hit with action potential will open hole in the Sarcplasmic reticulum and allows Ca++ to flow out

22
Q

Serca pump

A

Ca++ ATPase pump

23
Q

Duchenne Muscular Dystrophy

A

Wheelchairs are needed at 7-12 years of age

Doesn’t have Dystrophin

24
Q

Dystrophin

A

transfers energy from the shortening of sarcomeres to the entire muscle

25
Q

where does the cross bridge form?

A

between the myosin head and the g-actin site

26
Q

A-band

A

length on the myosin

27
Q

I-band

Will it shorten?

A

made of actin with a z disk in the middle

Will shorten in length

28
Q

terminal cisterna

A

terminal ends of the SR

29
Q

Triad?

A

two terminal cisterna and a t- tubule

30
Q

what is inside of the t-tubule?

A

ECF

31
Q

lag phase

A

starts when an Action potential is propagated and hits the calcium voltage gated channel in the presynaptic– ends when calcium binds to troponin

32
Q

Moter unit

A

one motor neuron and all muscle fibers

33
Q

what makes up the CNS

Everything else?

A

Brain and Spinal cord

PNS

34
Q

Biopolar neuron

A

Retna and olfactory system

Sensory

35
Q

Multipolar

A

99% of all neurons
Efferent
motor

36
Q

Unipolar

A

sensory and afferent

37
Q

Neurons

A

send electrical signal and propigate action potentials

38
Q

Astrocyte

A

Cover surfaces of neurons and blood vessels that supply neurons
Protect from heavy metals
Regulate ECF levels
Blood brain barrier

39
Q

What forms the blood brain barrier?

A

Astrocyte

40
Q

where is the astrocytes located

A

CNS

41
Q

Glial cells

A

anything that is not a nueron

42
Q

Microglia

A

gets rid of cellular junk

43
Q

Oligodendrocytes

A

makes myelin in the CNS

44
Q

Satellite cell

A

Same at a astrocyte, but located in the PNS

45
Q

What disease if no oligodendrocytes?

A

MS

46
Q

Dendrites are always ——

A

Post-synaptic

47
Q

temporal summation

A

one presynaptic with signals coming in close succession

48
Q

spatial summation

A

multipule presynaptic

49
Q

hypertrophy

A

muscle fibers get bigger

bio 264 (5 decks)

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