muscular sytem

Question 1

what are the five functions of the muscular system

Answer 1

movement, heat production, joint stability, retains posture, movement of substances in the body

Question 2

what are the three types of muscle tissue

Answer 2

smooth, cardiac and skeletal

Question 3

where is the skeletal muscle located

Answer 3

attached to the skeleton

Question 4

where is cardiac muscle located

Answer 4

heart

Question 5

where is smooth muscle located

Answer 5

walls of hollow internal structures e.g blood vessels, stomach etc

Question 6

function of skeletal muscle

Answer 6

movement

Question 7

function of cardiac muscle

Answer 7

circulate blood around the body

Question 8

function of the smooth muscle

Answer 8

moves substances around the body

Question 9

describe cardiac muscle cells

Answer 9

striated and involuntary

Question 10

describe skeletal muscle cells

Answer 10

started and voluntary

Question 11

describe smooth muscle cells

Answer 11

non-striated and involuntary

Question 12

do the three muscle all have nucleuses

Answer 12

yes

Question 13

what is the function of the tendon

Answer 13

connects muscle to bone

Question 14

what s the function of epimysium

Answer 14

connective tissue that covers and protects muscle

Question 15

what is the function of perimysium

Answer 15

connective tissue that covers and protects fascicles

Question 16

what is the function of endomysium

Answer 16

connective tissue that cover sans protects muscle fibres

Question 17

what is the function of fasiculli

Answer 17

bundle of muscle fibres

Question 18

what are the 2 contractile proteins

Answer 18

myosin and actin

Question 19

what is sarcolemma

Answer 19

the cell membrane of a muscle fibre

Question 20

what is sarcoplasm

Answer 20

the cytoplasm of the muscle fibre

Question 21

what does the sacroplasm contain

Answer 21

large amount of glycogen and myoglobin

Question 22

what is the sarcoplasmic reticulum

Answer 22

a network of tubes surrounding myofibrils

Question 23

what is the function of sarcoplasmic reticulum

Answer 23

it reabsorbs calcium ions during relaxation and releases them to cause muscle contraction.

Question 24

what is the function of transverse tubules

Answer 24

they conduct action potential towards the centre of the muscle fibres.

Question 25

what is a transverse tubules

Answer 25

cylindrical structures and run perpendicular to the long axis of the muscle fibre

Question 26

what does the dendrites do

Answer 26

collects signals

Question 27

what does the axon do

Answer 27

passes signals

Question 28

what does myelin sheath do

Answer 28

allows electrical impulses to transmit quickly and efficiently along the nerve cells

Question 29

what are the two types of motor movements

Answer 29

precise movements and gross movements

Question 30

what is a precise movement

Answer 30

contains many motor units controlling fewer muscle fibres

Question 31

what is gross movements

Answer 31

contain fewer motor units with many muscle fibres

Question 32

what are the three types of muscle contractions

Answer 32

concentric eccentric and isometric

Question 33

what happens with concentric muscle contractions

Answer 33

muscle contracts and shortens, joint movement occurs

Question 34

what happens with eccentric muscle contractions

Answer 34

muscle contracts and lengthens, forced lengthening of the muscle

Question 35

what happens with isometric muscle contractions

Answer 35

muscle contract, however there is no change in muscle length