Download Sample test questions for Test 2

Sample test questions for Test 2
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Muscle and control of movement
Slow oxidative fibers
a) are the main component of postural muscles
b) can be changed from slow oxidative to fast oxidative
c) are strengthend by short duration, high intensity training
d) have large quantities of myoglobin
Which of the following is the most strenuous type of muscle contraction?
a) isometric b) isotonic c) lengthening d) all are equally strenuous
Activated Golgi tendon organs
a) inhibit motoneurons of the contracting muscle
b) excite motoneurons of the contracting muscle
c) inhibit motoneurons of an antagonistic muscle
d) inhibit motoneurons of an antagonistic muscle
Which of the following occur during a withdrawal reflex:
a) flexors in the contralateral leg are activated
b) extensors in the contralateral leg are activated
c) flexors in the ipsilateral leg are activated
d) extensors in the ipsilateral leg are inhibited
Which of the following muscle types do not have transverse tubules?
a) skeletal b) single-unit smooth c) multiunit smooth d) cardiac
While working out, football players using resistance training such as the bench press and
biceps curl. Which of the following is true:
a) the number of myofibers is increased
b) fast twitch myofibers increase in cross sectional area
c) slow twitch myofibers decrease in number
d) fast glycolytic fibers convert to fast oxidative.
Which type of muscle cell has the fastest speed of contraction?
a) skeletal b) single-unit smooth c) multiunit smooth d) cardiac
Clusters of cells, sometimes classified as belonging to the basal nuclei, the release
dopamine to many parts of the brain and whose death or depletion may cause Parkinson’s
disease are labeled
a) caudate b) substantia nigra c) upper motoneurons
Which of the following muscle tissue types have sarcomeres?
a) skeletal b) cardiac
c) smooth
Which of the following is/are diagnostic for a patient exhibiting brief sudden purposeless
jerks that have progressively worsened since beginning at about age 40?
a) malfunction of basal ganglia
b) cerebellar disorder
c) hemiballismus
d) Huntington’s chorea
Which of the following constitute the middle level of hierarchy of motor control:
a) brainstem b) muscle fibers c) basal nuclei d) cerebellum e) spinal cord
Skeletal myofibers with a predominately glycolytic enzyme profile have
a) many mitochondria
b) large amounts of glycogen
c) a reddish appearance
d) relatively larger diameter
What are the majors roles of ATP during the contraction of skeletal muscles?
a) dissociated actin and myosin of the cross bridges
b) releases Ca++ from the sarcoplasmic reticulum
c) hydrolyzes to energize myosin for subsequent powerstroke
d) returns Ca++ to sarcoplasmic reticulum from cytoplasm by an ATPase
e) conduction action potentials in T-tubules.
Endocrine
Which of the following hormones are produced in and secreted by cells of the anterior
pituitary gland?
a) growth hormone b) leutininzing hormone c) TSH
d) oxytocin
Which of the following hormones are often released during times of stress?
a) aldosterone b) vasopressin c) ADH d) glucagon
What inhibits the secretion of prolactin?
a) dopamine b) glucagon c) norepinephrine d) ACh
What are the two hormones secreted from the adrenal medulla?
a) DHEA b) epinephrine c) norepinephrine d) cortisol
Which of the following are tropic hormones?
a) gonadotropin-releasing hormone
b) growth hormone
c) estrogen
d) TSH
e) cortisol
f) CRH
Which of the following are characteristic of Grave’s disease?
a) elevated TH b) suppressed TSH c) hypertrophy of the thyroid gland
d) increased appetite d) subnormal body temperature
Sensory, including hearing and vestibular function
The source of a sound (sound localization) is
a) based on the difference in arrival time of the sound between the two ears
b) based on the difference in the intensity of the sound between the two ears
c) easier for low frequency sounds
d) easier when tone changes
e) accomplished in the frontal lobe of the cerebral cortex.
Which of the following will cause responses in the semicircular canals:
a) nodding “yes”
b) shaking the head, as in “no”
c) tilting the head so that the ear touches the shoulder.
Decussation in the anterolateral tract is made by
a) 1st order neurons in the spinal cord b) 2nd order neurons in the brainstem
c) 3rd order neurons in the thalamus
The utricle and saccule allow detection of
a) motion
b) position of the head with respect to gravity
c) angular acceleration
d) distance from an object.
Axons in the anterolateral tract covey which type of information:
a) pain b) touch c) proprioception d) temperature
In the auditory system, pitch is encoded by
a) the location of vibrations along the basilar membrane
b) the degree of displacement of stereocilia
c) the frequency of action potentials
d) which hair cells are stimulated
e) which set of spiral ganglion cells have action potentials.
Afferent pain and temperature sensory information travel up the __________ and
decussate at the level of the ___________.
a) dorsal column/ medial lemniscal pathway…… spinal cord
b) spinothalamic tract……. spinal cord
c) dorsal column/ medial lemniscal pathway……brainstem
d) spinothalamic tract……. brainstem
A decrease in receptor sensitivity and thus a decrease in action potential frequency during
a stimulus of a constant strength is known as
a) modality b) transduction c) acuity d) adaptation e) recruitment