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EXAMINATION 3 for BIO 201 – HUMAN ANATOMY & PHYSIOLOGY 1
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EXAM #3 BIO 201 AT NU
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EXAMINATION 3 for BIO 201 – HUMAN ANATOMY & PHYSIOLOGY 11. The action of the supraspinatus is ______________.
(A) To help hold the head of the humerus in the glenoid cavity and rotate the
humerus laterally.
(B) To stabilize the shoulder joint and help prevent downward dislocation of the
humerus and to assist in abduction.
(C) To extend and medially rotate the humerus and to act as a synergist of the
latissimus dorsi
(D) To flex and adduct the humerus and to act as a synergist of the pectoralis
major
2. Which muscle is primarily responsible for preventing foot drop?
(A) Extensor digitorum longus
(B) Tibialis anterior
(C) Extensor hallucis longus
(D) Fibularis tertius
3. Which of the following is not a way of classifying muscles?
(A) Muscle location
(B) The type of muscle fibers
(C) The type of action they cause
(D) Muscle shape
4. What is the main factor that determines the power of the muscle?
(A) The length
(B) The shape
(C) The total number of neurons innervating it
(D) None of the above.
5. Orbicularis oris _____________.
(A) Closes, purses, and protrudes the lips
(B) Pulls the lower lip down and back
(C) Draws the eyebrows together
(D) Allows for blinking and squinting of the eye
6. Horizontal wrinkles in the forehead is produced by which muscle?
(A) Frontal belly of epicranius
(B) Zygomaticus major
(C) Temporalis
(D) All of the above
, 7. During vigorous exercise, there may be insufficient oxygen available to completely break
down pyruvic acid for energy. As a result, pyruvic acid may be converted to _________.
(A) A strong base
(B) Stearic acid
(C) Hydrochloric acid
(D) Lactic acid
8. When a sarcomere contracts one expects to observe ___________.
(A) Smaller I bands
(B) Wider H zone
(C) Wider I bands
(D) Darker A band
9. If a muscle were stretched to the point where thick and thin filaments no longer
overlapped ____________.
(A) Cross bridge attachment would be optimal
(B) No muscle tension could be generated
(C) Maximum force production would result
(D) ATP consumption would increase since the sarcomere is trying to contract
10. Reduction in blood flow to a muscle fiber would have the greatest effect on _________.
(A) Slow oxidative fibers
(B) Fast glycolytic fibers
(C) Both fast and slow oxidative fibers
(D) Fast oxidative fibers
11. The muscles that are found at the openings of the body are collectively called ________.
(A) Convergent muscles
(B) Circular muscles
(C) Parallel muscles
(D) Divergent muscles
12. The names of muscles can often help determine the action of a muscle. What muscle
flexes the distal interphalangeal joints?
(A) Flexor carpi ulnaris
(B) Flexor digitorum profundus
(C) Extensor carpi radialis brevis
(D) None of the above
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