Test 3 (Myscle Phys)

Question 1

Interferes with ability to produce AP’s

Answer 1

K+ accumulation

Question 2

Due to the accumulation of lactate

Answer 2

Internal acidity

Question 3

Leads to failure of excitation- contraction coupling

Answer 3

reduced SR calcium release

Question 4

Caused by changes in the CNS rather than fatigue of the muscles themselves

Answer 4

Central fatigue

Question 5

Utilized at onset on contractile activity, but limited by CP stores

Answer 5

Creatine phosphate

Question 6

Takes place within muscle mitochondria if sufficient oxygen is present and is essential during long periods of activity

Answer 6

Cellular respiration

Question 7

Supports anaerobic or high intensity exercise

Answer 7

Glycolysis

Question 8

Provides sensory information about muscle length

Answer 8

Muscle spindle apparatus

Question 9

Provide sensory information about tension exerted on tendons

Answer 9

Golgi tendon organs

Question 10

What neurons are attached to muscle spindles?

Answer 10

Afferent neurons

Question 11

Located on tendons near their junction with eh muscle

Answer 11

Golgi tendon organ

Question 12

Monitor muscle tension

Answer 12

Golgi tendon organs

Question 13

Inherited disease characterized by progressive deterioration of muscle tissue

Answer 13

Muscular dystrophy

Question 14

Bacteria in food produces neurotoxin, which prevents the release of acetylcholine necessary for muscle contraction

Answer 14

Botulism

Question 15

Neurodegenerative disease affecting various motor neurons which leads to loss of function leads to muscle weakness, atrophy, and spastic paralysis

Answer 15

ALS

Question 16

Autoimmune disease in which antibodies are produced that attach to the acetylcholine receptors on the sarcolemma, this blocking or reducing the stimulatory effect of the neurotransmitter

Answer 16

Eye drooping????

Question 17

Destruction of the neurons leads to paralysis of the skeletal muscle

Answer 17

Polio

Question 18

Bacteria produces a neurotoxin that affects motor neurons in the spinal cord resulting in continuous stimulation and contraction of muscles

Answer 18

Tetanus

Question 19

Disease caused by bacteria found in soil

Answer 19

Tetanus

Question 20

Involuntary, regulated by autonomic system, striated

Answer 20

Cardiac muscle

Question 21

Mass of cardiac muscle cells connected to each other via gap junction

Answer 21

Myocardium

Question 22

Found in the walls of hollow organs and tubes with NO striations

Answer 22

Smooth muscles

Question 23

What do long thin filaments attach to?

Answer 23

Dense bodies

Question 24

What are the 3 types of smooth muscle filaments?

Answer 24

Thick myosin
Thin actin
Intermediate filaments

Question 25

Consists of discrete units that function independently of one another (units must be separately stimulated)

Answer 25

Multiunit smooth muscle

Question 26

Individual cells are electrically liked by gap junctions

Answer 26

Single-Unit smooth muscle

Question 27

Excitation-Contraction coupling in smooth muscle

Answer 27

begins with rise in intracellular concentrations | calcium binds to calmodulin