FREE AND STUDY GAMES ABOUT AP CHAP 9 EXAM

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FREE AND STUDY GAMES ABOUT AP CHAP 9 EXAM

QUESTIONS

Actual Qs and Ans Expert-Verified Explanation

This Exam contains:

-Guarantee passing score -56 Questions and Answers -format set of multiple-choice -Expert-Verified Explanation Question 1: which of the following is not a role of ionic calcium in muscle contration?

Answer:

activates epinephrine released from adrenal gland

Question 2: the sliding filament model of contration involves____

Answer:

actin and myosin sliding past each other and partially overlapping

Question 3: what produces the striations of skeletal muscle cell?

Answer:

the arrangement of myofilaments Question 4: during vigorous exercise there may be insufficient oxygen available to completely break down pyruvic acid fro energy. as a result the pyruvic acid is converted to___

Answer:

lactic acid

Question 5: what is the functional unit of skeletal muscle called?

Answer:

a carcomere

Question 6: which of the following statmetns is most accurate

Answer:

muscle tension remains relatively constant during iso tonic contration

Question 7: fatigued muscle cells that recover rapidly are the products of

Answer:

intense exercise of short duration

Question 8: the term aponeruosis refers to___

Answer:

a sheetlike indirect attachment to a skeletal element

Question 9: what does oxygen deficit represent?

Answer:

the difference bewtween the amount of oxygen needed for totally aerobic muscle activity and the amount actually used.Question 10: during muscle contration, myosin cross bridges attach to which active sites?

Answer:

actin filaments Question 11: smooth muscles that act like skeletal muscles but are controlled by the autonomic nerves and hormones are

Answer:

multiunit muscles

Question 12: the oxygen biding protein found in muscle cells is____

Answer:

myoglobin

Question 13: the major function of the sarcoplasmic reticulum in muscle contration is to___

Answer:

regulate intracellular calcium concentration

Question 14: which of the following staments is false or incorect?

Answer:

caridac muscle fibers depend mostly on anaerobic cellular respiration to generate atp

Question 15: the strongest muscle contrations are normall achieved by____

Answer:

increasing the stimulation up to the maximal stimulus Question 16: which of the choices below does not descrive how recovery oxygen uptake restores metabolic conditions?

Answer:

increases the level of lactic acid in the muscle

Question 17: which of the following surronds the individual muscle cell?

Answer:

endomysium

Question 18: muslce tissue has all of the following properties except____

Answer:

secretion

Question 19: muslce tone is____

Answer:

a state of sustained partial contraction

Question 20: which of the following is true about smooth muscle contraction?

Answer:

certain smooth muscle cells can actually divide to increase their numbers

Question 21: whena muscle is unable to respond to stimuli temporarily it is in which of the following periods?

Answer:

refractory period

Question 22: the muscle cell membrane is called the

Answer:

sarcolemma Question 23: immediately following the arrival of the stimulus at a skeletal muscle cell there is a short period called the___period during which the vents of excitation contraction coupling occur

Answer:

latent Question 24: the giant protein titin maintains the organization of the ___ assisting in muscle stretching

Answer:

a band

Question 25: myglobin___

Answer:

stores oxygen in muscles cells

Question 26: most skeletal muscle contain

Answer:

a mixture of fiber types

Question 27: which of the following statments is true

Answer:

striated muscle cells are long and cylindrical with many nuclei Question 28: which of the following is not a usual result of resistance exercise?

Answer:

increase in the number of muscle cells