muscular system

Question 1

how many muscles are in the body?

Answer 1

over 600

Question 2

whats involuntary muscle? whats muscle type? where dose it form? what dose it do?

Answer 2

• cardiac muscle that functions with out conscious thought
• forms on wall of heart
• contracts to circulate blood

Question 3

whats voluntary muscle? whats muscle type?where dose it form? what dose it do?

Answer 3

• skeletal muscle that person has control over movement
• forms around all bones of body
• causes body movement

Question 4

whats smooth/visceral muscle? where is it form? what dose it do?

Answer 4

• muscle fiber
• forms in internal organs/ blood vessels
• produces movement in organs

Question 5

4 functions of skeletal muscle?

Answer 5

attach to bones, produce heat, posture protection

Question 6

tendons?

Answer 6

a way that skeletal muscles attach to bone by, strong/tough connective tissue cords.

Question 7

fascia?

Answer 7

a way that the skeletal muscles attach to the bone through a sheet like membrane that covers and protects tissue

Question 8

bundles of muscle fiber?

Answer 8

connective/fibrous tissue that wraps around individual muscle

Question 9

muscle attachment to bones?

Answer 9

tendons- strong connective tissue cords

Question 10

orign

Answer 10

end of muscle that does not move

Question 11

insertion

Answer 11

end of muscle that moves with contraction

Question 12

muscle tone?

Answer 12

when muscles partially contract, that’s maintained through proper nutrition and exercise

Question 13

muscle atrophy? what causes it?

Answer 13

• the muscles shrink in size and loose strength

- happens b/c muscles aren’t used for a long time.

Question 14

contracture?

Answer 14

severe tightening of a flexor muscle resulting in bending of joint.

Question 15

joints affected by contracture?

Answer 15

finger, wrist, knees.

Question 16

excitability?

Answer 16

ability to respond to a stimulus

Question 17

extensibility?

Answer 17

ability to be stretched

Question 18

contractability?

Answer 18

ability to become short and thick.

Question 19

elasticity?

Answer 19

ability to return to original shape.

Question 20

adduction?

Answer 20

moving part of body towards midline (moving leg towrds body)

Question 21

abduction?

Answer 21

moving body part away from midline (moving arm away from side of the body)

Question 22

rotation?

Answer 22

turning a body part on its own axis by circular motion (turn head side to side)

Question 23

flexion?

Answer 23

decreasing angle between two bones. (bending lower arm up towards upper arm)

Question 24

extension?

Answer 24

increasing angle between two bones. (straightening the lower leg away from upper leg)

Question 25

biceps brachii?

Answer 25

muscle of upper arm that flexes lower arm.

Question 26

triceps branchii?

Answer 26

muscle of upper arm that extends lower arm.

Question 27

deltoid?

Answer 27

muscle in shoulder that abducts arm (moving away from midline) (used as injection site)

Question 28

intercostals?

Answer 28

muscle between ribs that move for breathing

Question 29

pectoralis major?

Answer 29

muscle on upper chest that adducts upper arm (moving towards midline)

Question 30

rectus abdominus?

Answer 30

muscles on pubic bone that compress the abdomen

Question 31

latissimus dorsi?

Answer 31

muscles on spine to chest that extend and adduct upper arm (move towards midline)

Question 32

sternocleidomastoid?

Answer 32

muscle on side of neck that turns and flexes head

Question 33

trapezius?

Answer 33

muscle on upper back and neck that extends the head and moves shoulder

Question 34

Quadriceps femoris

Answer 34

Muscle i’m in front of thigh that extends the leg

Question 35

Satorious?

Answer 35

Muscle on front of thigh that abducts the thigh and flexes the leg

Question 36

Tibial is anterior

Answer 36

The muscle on the front of lower leg that flexes and inverts the foot

Question 37

Gluteus Maximus?

Answer 37

Muscle in the buttocks that extends the thigh

Question 38

Hamstring/biceps femoris?

Answer 38

Muscle in back of thigh that flexes leg

Question 39

Gastrocnemius?

Answer 39

Muscle on back of lower leg that flex sole of foot

Question 40

Atrophy?

Answer 40

Muscle wasting that occurs when muscles are not used

Question 41

Tetanus

Answer 41

Contaminated wound caused by bacteria

Question 42

Strain?

Answer 42

Over stretching/injury to tendon or muscle, common in hamstring and the back

Question 43

Muscular dystrophy

Answer 43

Bad/ unnormal development of muscle, inherited disease that lead to muscle atrophy. – Common in males

Question 44

Contracture

Answer 44

Shortening of afrxor muscle, resulting from lack of use. ( foot drop, laying in bed for a long period of time)

Question 45

Muscle spasm? What’s the treatment?

Answer 45

Sudden, painful involuntary contraction

Treatment- stretching

Question 46

Myasthenia gavis?

Answer 46

Nerve impulses not properly trasmitted that leads to weakness and paralysis

Question 47

Slow twitch?

Answer 47

Prolonged activity that requires constant energy, aerobics, running, bicycle. - exercise that has more mitochondria

Question 48

Fast twitch?

Answer 48

Brief, high-energy expenditure, in aerobics, weightlifting, sprints, push-ups.

Question 49

Oxygen debt?

Answer 49

You breathing rapidly and deeply