L4: Muscle and Nerve

Question 1

what does muscle tissue consists of

Answer 1

elongated cells (muscle cells, fibres or myocytes)

Question 2

how does muscle tissue generate force

Answer 2

energy from hydrolysis of ATP

Question 3

types of muscle tissue

Answer 3

skeletal, smooth, cardiac

Question 4

features of skeletal muscle

Answer 4

striated
multinucleated
long cells

Question 5

location of skeletal muscle

Answer 5

attached to bones by tendons

Question 6

function of skeletal muscle tissue

Answer 6

posture
protection
heat prouduction
motion

Question 7

striation of skeletal muscle fibres caused by

Answer 7

highly organised arrangement of of myofibrils

Question 8

location of myofibrils

Answer 8

sarcoplasm

Question 9

composition of myofibirils

Answer 9

thin filaments (actin) and thick filaments (myosin)

Question 10

function of z disc

Answer 10

separates sarcomeres

Question 11

location of epimysium

Answer 11

surronds anatomical muscle

Question 12

location of perimysium

Answer 12

around fasicles

Question 13

location of enodymsium

Answer 13

around muslce fibres

Question 14

A band contains

Answer 14

all thick filaments

Question 15

I band contains

Answer 15

all thin filaments

Question 16

H zone contains

Answer 16

all thick filaments

Question 17

M line

Answer 17

middle of sarcomeres

Question 18

I band made up of

Answer 18

actinins

Question 19

function of titin

Answer 19

links Z discs to M line

Question 20

features of cardiac muscle

Answer 20

striated
single central nucleus
involuntary control

Question 21

how do cardiac muscle fibres join

Answer 21

end to end through intercalated discs

Question 22

intercalated discs contain what junctions

Answer 22

desmosome and gap junctions

Question 23

features of smooth muscle tissue

Answer 23

unstriated
single nucleus
involuntary

Question 24

size of smooth muscle tissue

Answer 24

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

Question 25

function of dense bodies

Answer 25

anchoring sites for actin filaments in smooth muscle

Question 26

____ filaments connect to dense bodies

Answer 26

intermediate

Question 27

PNS nervous tissue divisions

Answer 27

sensory motor

Question 28

functions of nervous system

Answer 28

maintain homeostasis control voluntary movements perception, behaviour and memory

Question 29

integrative activity means

Answer 29

analysis and storing of info

Question 30

motor activity means

Answer 30

stimulation of effectors through PNS

Question 31

nervous tissue types

Answer 31

neurons and neuroglia

Question 32

function of dendrites

Answer 32

receiving part of neuron

Question 33

function of axon

Answer 33

carry nerve impulses away from neuron

Question 34

neuron characteristics

Answer 34

don't divide high metabolic rate

Question 35

multipolar neuron compisition

Answer 35

2 or more dendrites single axon cell body at top

Question 36

bipolar neuron compisition

Answer 36

1 dendrite 1 axon cell body between

Question 37

unipolar neuron compisition

Answer 37

continuous axon and dendrite cell body off to one side

Question 38

types of bipolar neurons

Answer 38

special sense neurons

Question 39

types of multipolar neurons

Answer 39

motor neurons

Question 40

types of unipolar neurons

Answer 40

sensory neurons

Question 41

anaxonic neurons found in

Answer 41

brain and special sense organs

Question 42

function of neuroglia

Answer 42

nutrient supply to neurons

Question 43

astrocyte functions

Answer 43

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

Question 44

communication of astrocytes and neurons

Answer 44

gliotransmitters

Question 45

function of oligodendrocytes

Answer 45

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

Question 46

purpose of microglia

Answer 46

phagocytic protection

Question 47

what do ependymal cells produce

Answer 47

CSF

Question 48

location of ependymal cells

Answer 48

where CSF is found

Question 49

purpose of CSF

Answer 49

mechanical buffer; moves nutrients and waste

Question 50

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

Answer 50

single cubodial cilia microvilli

Question 51

PNS neuroglia cells

Answer 51

satellite schwann

Question 52

function of schwann cells

Answer 52

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

Question 53

function of satellite cells

Answer 53

surround neuron cell bodies