Chapter 6

Question 1

Voluntary muscle(s)

Answer 1

Skeletal

Question 2

Involuntary muscle(s)

Answer 2

Smooth

Cardiac

Question 3

Functions of muscular system

Answer 3

Locomotion (internal+external)
Maintains posture
Produces heat
Facial expression

Question 4

Sarcomere and location

Answer 4

Contracting unit of myofibril

Found between z-lines

Question 5

Motor unit

Answer 5

One neuron and all the skeletal muscle cells it stimulates

Question 6

Calcium in contractions

Answer 6

Binds on actin
Myosin heads bind to actin + pull
Calcium releases + myosin heads release

Question 7

Acetycholine

Answer 7

A neurotransmitter

Question 8

Twitch vs tectonic contraction

Answer 8

Singly brief jerky

Continuous contraction no relaxation

Question 9

Which muscles compress the abdomen

Answer 9

Rectus abdominis

Question 10

Abduction

Answer 10

Lifted away from body

Question 11

Adduction

Answer 11

Lowered towards body

Question 12

Circumduction

Answer 12

Shoulder circle

Question 13

Eversion

Answer 13

Pinky toe tilted out

Question 14

Inversion

Answer 14

Big toe tilted in (sickle)

Question 15

Dorsiflexion

Answer 15

Toes up (flex)

Question 16

Plantar flexion

Answer 16

Toes down (point)

Question 17

Flexion

Answer 17

Away from body (knee back arm up at shoulder)

Question 18

Extension

Answer 18

Brought back towards body

Question 19

Rotation

Answer 19

Head side to side (lateral leg out medial leg in)

Question 20

Supination

Answer 20

Thumb up

Radius and ulna parallel

Question 21

Probation

Answer 21

Thumb down

Radius over ulna

Question 22

Opposition

Answer 22

Fingers come together

Question 23

Naming of muscles (7)

Answer 23

Direction
Size
Location
Number of origins
Location or origin and insertion
Shape 
Action

Question 24

biceps brachii

Answer 24

prime mover of flexion of forearm, supinates forearm

Question 25

bicep femoris

Answer 25

leg

Question 26

deltoid

Answer 26

prime mover of arm abduction, injection site

Question 27

frontalis

Answer 27

raise eyebrows, wrinkles forehead

Question 28

gastrocnemius

Answer 28

prime mover of plantar flexion

Question 29

iliopsoas

Answer 29

two muscles prime mover of hip flexion

Question 30

orbicular oculi

Answer 30

squint, blink, wink

Question 31

orbicular oris

Answer 31

pucker lips

Question 32

pectoralis major

Answer 32

adducts, flexes arm

Question 33

rectus femoris

Answer 33

injection site quadriceps

Question 34

sartorius

Answer 34

'tailors muscle' synergist for leg crossing

Question 35

tibialis anterior

Answer 35

dorsiflexes and inverts the foot

Question 36

triceps brachii

Answer 36

prime mover of elbow extension antagonist of biceps brachii

Question 37

buccinator

Answer 37

whistling muscle

Question 38

trapezius

Answer 38

extends head, elevate, depress adduct, and stabilize scapula

Question 39

drug that blocks ach receptor sites

Answer 39

no contraction. will stop because actin cant bind and there is no signal

Question 40

drug that blocks calcuim from being released

Answer 40

myosin cant bind bc heads will not open

Question 41

drug that promotes calcium release

Answer 41

enduce contractions petosin

Question 42

drug that paralyzes the nerve to a muscle

Answer 42

no signal no contraction blocked stop pain but not the contraction