Movements and Muscles

Question 1

What acts as a shock absorber and allows movement?

Answer 1

muscle

Question 2

What assists with maintaining body temp?

Answer 2

muscle

Question 3

What type of muscle is under involuntary control and is found in the digestive tract?

Answer 3

smooth muscle

Question 4

What type of muscle is found in the heart?

Answer 4

cardiac muscle

Question 5

What type of muscle is under voluntary control?

Answer 5

skeletal muscle

Question 6

Human movement is directly related to the structure and function of……

Answer 6

skeletal muscle

Question 7

Skeletal muscle has two ______ attached to a _____

Answer 7

tendons ; bone

Question 8

The stable tendon is know as the…..

Answer 8

origin

Question 9

The more mobile tendon is know as the…..

Answer 9

insertion

Question 10

What is the basic contractile unit of muscle?

Answer 10

sarcomeres

Question 11

What do sarcomeres consist of?

Answer 11

actin and myosin

Question 12

What type of muscle contraction is when muscle length stays the SAME?

Answer 12

isometric

Question 13

What type of muscle contraction is when muscle length SHORTENS?

Answer 13

concentric

Question 14

What type of muscle contraction is when muscle LENGTHENS?

Answer 14

eccentric

Question 15

What type of contraction produces tension within the muscle without a change in length of the muscle fiber?
(ex: carrying a grocery bag in your arm in one position)

Answer 15

isometric

Question 16

What type of muscle contraction is when the actin & myosin are sliding towards one another and is when the internal forces are greater than the external forces?
(ex: raising grocery bag up off the table)

Answer 16

concentric

Question 17

What type of muscle contraction is when gravity is being resisted and the movement of a muscle around a joint is slowed and controlled?
(ex: lowering grocery bag onto the table)

Answer 17

eccentric

Question 18

What are the 3 directions of muscle fibers?

Answer 18

1) rectus
2) transverse
3) oblique

Question 19

What type of muscle fibers are when the muscle fascicles are parallel to the long axis of the body or limb?

Answer 19

rectus

Question 20

What type of muscle fibers are when the muscle fascicles are perpendicular to the long axis of the body or limb?

Answer 20

transverse

Question 21

What type of muscle fibers are when the muscle fascicles are aligned at an angle to the long axis of the body or limb?

Answer 21

oblique

Question 22

the prime mover or main mover muscle causing motion

ex: the quads are the prime mover for knee extension

Answer 22

agonist

Question 23

muscles assist the agonist in providing a desired muscle action - works concurrently with the muscle
(ex: brachioradialis muscle groups acts as a synergist in elbow flexion)

Answer 23

synergist

Question 24

opposite of the agonist. Located on the opposite side of the joint of agonist. Contracts eccentrically while the agonist contracts concentrically - stabilizes/protects the joint

Answer 24

antagonist

Question 25

muscles assist the agonist by steadily contracting to balance the body against the force of gravity - help agonist to act more effectively

Answer 25

stabilizer

Question 26

allows for muscle to perform more than one action

Answer 26

neutralizer

Question 27

the one that is doing the work (aka prime mover)

Answer 27

agonist

Question 28

the one who is opposing the prime mover

Answer 28

antagonist

Question 29

the one who is helping out (aka co-contraction)

Answer 29

synergist

Question 30

means the muscle crosses two joints

Answer 30

bi-articular

Question 31

muscle length stays the same

Answer 31

isometric

Question 32

muscle length shortens

Answer 32

concentric

Question 33

muscle lengthens

Answer 33

eccentric