Review Chapter 8- Muscle Tissue

Question 1

Actin

Answer 1

Is in thin filaments that myosin filaments bind to

Question 2

ADP

Answer 2

With phosphate form ATP

Question 3

Aerobic production of energy

Answer 3

Glucose—> 02 + 2 pyruvic acid—> CO2 + H2O + 36 ATP

Question 4

ATP

Answer 4

Source of energy for muscle contraction

Question 5

Calcium ions

Answer 5

Ions necessary to trigger muscle contraction

Question 6

Cardiac muscle characteristics

Answer 6

Branched with intercalculated discs, involuntary, found in heart, striated, one nucleus, limited regeneration

Question 7

Ligament

Answer 7

Binds bones to bones

Question 8

Motor unit

Answer 8

A single nerve fiber and the muscle fibers it supplies

Question 9

Muscle fibers

Answer 9

Another name for muscle cells

Question 10

Muscle tissue functions

Answer 10

Produce body movements, stabilize body positions, regulate organ volume by using sphincters, move substances within body, heat

Question 11

Myosin

Answer 11

Thick myolfilament that has enlarged heads to form cross bridges

Question 12

Neuromuscular junction

Answer 12

The connection between a nerve fiber and a muscle fiber

Question 13

Rigor mortis

Answer 13

Stiffening of the muscles after death due to calcium leaking out of the sarcoplasmic reticulum

Question 14

Sarcomeres

Answer 14

A compartment within the myofibril formed from the overlapping of the thin and thick filaments. The basic functional unit of the muscle fiber.

Question 15

Skeletal muscle aging.

Answer 15

Decrease in muscle strength, slowing of muscle reflexes, loss of flexibility

Question 16

Skeletal muscle characteristics

Answer 16

Attached to bones and moves skeleton, striated, voluntary, limited regeneration

Question 17

Smooth muscle characteristics

Answer 17

Nonstriated, involuntary, considerable regeneration

Question 18

Sodium ions

Answer 18

The movement of these ions from outside the sarcolemma to inside causes an action potential to begin to move along

Question 19

Striations

Answer 19

Alternate light and dark bands running through the sarcoplasm of a muscle cell

Question 20

Tendon

Answer 20

Connective tissue that attaches muscle to bone

Question 21

ACh

Answer 21

The neurotransmitter released from the synaptic vesicles of the neurons supplying skeletal muscle