FREE SCIENCE AND STUDY GAMES ABOUT PHYSIOLOGY

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FREE SCIENCE AND STUDY GAMES ABOUT PHYSIOLOGY

EXAM QUESTIONS

Qs and Ans Expert- Explanation

This Exam contains:

-Guarantee passing score -75 Questions and Answers -format set of multiple-choice -Expert- Explanation

Question 1: Which of the following is an example of a uniaxial joint?

Answer:

elbow joint Question 2: Repeated stimulation of muscle in time lessens its excitability and contractibility and may result in

Answer:

fatigue.Question 3: During which phase of the twitch contraction is there a triggering of the release of calcium ions into the sarcoplasm?

Answer:

Latent period Question 4: Muscle contractions will continue as long as:

Answer:

the calcium ions are attached to the troponin.

Question 5: The substance that attracts oxygen in the myoglobin molecule is:

Answer:

iron

Question 6: The contractile unit of a muscle cell is the

Answer:

sarcomere Question 7: The more muscle fibers contracting at the same time, the stronger the contraction of the entire muscle. The number of muscle fibers contracting depends on how many motor units are

Answer:

recruited Question 8: Endurance training is also known as:

Answer:

aerobic training.Question 9: An example of a hinge joint is(are) the:

Answer:

interphalangeal joints.Question 10: Which structure allows the electrical signals to travel along the sarcolemma and move deeper into the cell?

Answer:

transverse tubule

Question 11: Which of the following is not a function of muscles?

Answer:

storage Question 12: If a structural classification is used, joints are named according to the type of _____ tissue that joins the bones together.

Answer:

connective

Question 13: The four kinds of protein that make up myofilaments are myosin, actin,

Answer:

tropomyosin, and troponin.

Question 14: Which joint allows for the widest range of movement?

Answer:

ball and socket

Question 15: Muscle tone is maintained by

Answer:

negative feedback mechanisms.

Question 16: White fibers are also called _____ fibers.

Answer:

fast

Question 17: Synarthrotic joints are

Answer:

immovable.

Question 18: The shoulder joint is an example of a _____ joint.

Answer:

The shoulder joint is an example of all of these.Question 19: The strength of a muscle contraction is influenced by the:

Answer:

amount of load, initial length of muscle fibers, and recruitment of motor units.Question 20: Anaerobic respiration results in the formation of an incompletely catabolized molecule called

Answer:

lactate .

Question 21: The joints between the articulating surfaces of the vertebral processes are classified as what type of joint?

Answer:

gliding Question 22: Thick myofilaments extend the length of the:

Answer:

A-band Question 23: Stretching the foot down and back and pointing the toe is called:

Answer:

plantar flexion.Question 24: All of the following are true characteristics of an isometric contraction except:

Answer:

movement is produced.Question 25: All of the following are characteristics of smooth muscle except:

Answer:

thin and thick filaments are aligned in sarcomeres like skeletal muscles.Question 26: The minimal level of stimulation required to cause a fiber to contract is called the

Answer:

threshold stimulus.Question 27: Rotator cuff surgery is performed quite commonly on professional baseball players, especially pitchers. Evidently, the throwing motion places enormous stress on the:

Answer:

shoulder Question 28: Which of the following statements about cardiac muscle is incorrect?

Answer:

Cardiac muscle requires nervous stimulation to contract.