muscles general

Question 1

how much percent of our body weight does muscles make up

Answer 1

~50%

Question 2

why are muscles important

Answer 2

for function and movement of the body

Question 3

why is PT important for muscles

Answer 3

help us look at the relationship of muscles and bones that they help to move, while also providing force and energy to move the levers/bones

Question 4

what are intramuscular injections, and why are they useful

Answer 4

injections into the muscle and are more useful because the muscles is rich in blood supply and able to store myoglobin, so the injection can freely move around the body and be stored in the muscles

Question 5

what are the types of muscles

Answer 5

1. smooth (internal organs)
2. cardiac (heart)
3. skeletal (main)

Question 6

when muscles are at rest they are _

Answer 6

long

Question 7

when muscles are contracting they are _

Answer 7

shorter

Question 8

what are the main function of muscles

Answer 8

1. to move
2. provide stability
3. control passages
4. heat production
5. glycemic control

Question 9

muscle movement

Answer 9

move lever system in body (bones)

Question 10

muscle stability

Answer 10

keep the body physically balanced

Question 11

muscle control passages

Answer 11

control smooth muscles

Question 12

muscle heat production

Answer 12

require energy for contraction, which generate heat

Question 13

muscle glycemic control

Answer 13

ability to control amount of glucose in body/blood

Question 14

muscle characteristics

Answer 14

1. excitable
2. contractible
3. extensible
4. elastic

Question 15

how is a muscle excited

Answer 15

by neurons or stimulus

Question 16

how is a muscle being able to contract unique

Answer 16

only in muscle tissue

Question 17

what does it mean when a muscle is extensible

Answer 17

it is able to extend

Question 18

what does it mean when a muscle is elastic

Answer 18

it is able to recoil after being stretched

Question 19

properties of smooth muscle

Answer 19

involuntary
no striations, spindle shaped
in walls of visceral organs
push contents throughout the body

Question 20

properties of cardiac muscle

Answer 20

involuntary
striations
in walls of the heart
contract with no nervous stimulus, and nervous system affects the heart

Question 21

properties of skeletal muscle

Answer 21

voluntary and involuntary
long cells with striations
most adaptable, attached to and surround skeleton

Question 22

what is the name of the muscle cells in the heart

Answer 22

cardiomyocytes

Question 23

layers of connective tissues (largest to smallest)

Answer 23

epimysium
perimysium
endomysium

Question 24

epimysium

Answer 24

thin layer of connective tissue on surface of muscle tissue that surrounds it as a whole

Question 25

perimysium

Answer 25

each bundle of muscle (fascicles) is surrounded by this connective tissue

Question 26

endomysium

Answer 26

surrounds each individual muscle cell/fiber (long cylinder)

Question 27

functional groups of muscle fibers

Answer 27

intrinsic 
extrinsic
prime mover
synergist
antagonist
fixator

Question 28

intrinsic

Answer 28

located inside the system they are moving

Question 29

extrinsic

Answer 29

located outside of the system they are actually moving

Question 30

prime mover

Answer 30

muscle that’s doing the majority of work to move the bone in a direction

Question 31

synergist

Answer 31

help move muscle in the same direction

Question 32

antagonist

Answer 32

move muscle in opposite direction

Question 33

fixator

Answer 33

help provide stability for other muscle movement

and fix location (stabilizer muscles)

Question 34

tendon

Answer 34

anchor point of connective tissue

Question 35

compartmentalization

Answer 35

fascia/ fascicle