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BIOSCI 107 > L4: Muscle and Nerve > Flashcards

L4: Muscle and Nerve Flashcards

1
Q

what does muscle tissue consists of

A

elongated cells (muscle cells, fibres or myocytes)

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2
Q

how does muscle tissue generate force

A

energy from hydrolysis of ATP

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3
Q

types of muscle tissue

A

skeletal, smooth, cardiac

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4
Q

features of skeletal muscle

A

striated
multinucleated
long cells

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5
Q

location of skeletal muscle

A

attached to bones by tendons

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6
Q

function of skeletal muscle tissue

A

posture
protection
heat prouduction
motion

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7
Q

striation of skeletal muscle fibres caused by

A

highly organised arrangement of of myofibrils

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8
Q

location of myofibrils

A

sarcoplasm

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9
Q

composition of myofibirils

A

thin filaments (actin) and thick filaments (myosin)

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10
Q

function of z disc

A

separates sarcomeres

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11
Q

location of epimysium

A

surronds anatomical muscle

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12
Q

location of perimysium

A

around fasicles

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13
Q

location of enodymsium

A

around muslce fibres

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14
Q

A band contains

A

all thick filaments

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15
Q

I band contains

A

all thin filaments

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16
Q

H zone contains

A

all thick filaments

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17
Q

M line

A

middle of sarcomeres

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18
Q

I band made up of

A

actinins

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19
Q

function of titin

A

links Z discs to M line

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20
Q

features of cardiac muscle

A

striated
single central nucleus
involuntary control

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21
Q

how do cardiac muscle fibres join

A

end to end through intercalated discs

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22
Q

intercalated discs contain what junctions

A

desmosome and gap junctions

23
Q

features of smooth muscle tissue

A

unstriated
single nucleus
involuntary

24
Q

size of smooth muscle tissue

A

30-200 micrometres long, 3-8 micrometres thickest in middle

25
Q

function of dense bodies

A

anchoring sites for actin filaments in smooth muscle

26
Q

____ filaments connect to dense bodies

A

intermediate

27
Q

PNS nervous tissue divisions

A

sensory
motor

28
Q

functions of nervous system

A

maintain homeostasis
control voluntary movements
perception, behaviour and memory

29
Q

integrative activity means

A

analysis and storing of info

30
Q

motor activity means

A

stimulation of effectors through PNS

31
Q

nervous tissue types

A

neurons and neuroglia

32
Q

function of dendrites

A

receiving part of neuron

33
Q

function of axon

A

carry nerve impulses away from neuron

34
Q

neuron characteristics

A

don’t divide
high metabolic rate

35
Q

multipolar neuron compisition

A

2 or more dendrites
single axon
cell body at top

36
Q

bipolar neuron compisition

A

1 dendrite
1 axon
cell body between

37
Q

unipolar neuron compisition

A

continuous axon and dendrite
cell body off to one side

38
Q

types of bipolar neurons

A

special sense neurons

39
Q

types of multipolar neurons

A

motor neurons

40
Q

types of unipolar neurons

A

sensory neurons

41
Q

anaxonic neurons found in

A

brain and special sense organs

42
Q

function of neuroglia

A

nutrient supply to neurons

43
Q

astrocyte functions

A

maintain blood brain barrier (endothelium)
support (microfilaments) and repair (scar)

44
Q

communication of astrocytes and neurons

A

gliotransmitters

45
Q

function of oligodendrocytes

A

insulating myelin sheath around axons accelerates conduction of action potential
makes less prone to interruption

46
Q

purpose of microglia

A

phagocytic protection

47
Q

what do ependymal cells produce

A

CSF

48
Q

location of ependymal cells

A

where CSF is found

49
Q

purpose of CSF

A

mechanical buffer; moves nutrients and waste

50
Q

ependymal cells are ____ layered of predominantly ____ cells which have ___ (flow) and ___ (sampling(

A

single
cubodial
cilia
microvilli

51
Q

PNS neuroglia cells

A

satellite
schwann

52
Q

function of schwann cells

A

insulating myelin sheath around ONE axon
support multiple non-myelinated axons

53
Q

function of satellite cells

A

surround neuron cell bodies

54
Q
A

BIOSCI 107 (5 decks)

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