Final exam 8

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Which is a correct statement about the chemosensory system?
A. Compared to gustation, olfaction has fewer receptors and fewer receptor categories.
B. Eating a high glucosamine-containing meal will trigger the umami receptors.
C. All chemicals detected in the nose have that information is sent to the brain.
D. Detecting odors is easiest in a very humid environment (i.e., not a very arid one).
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Terms in this set (15)
Which is a correct statement about the chemosensory system?
A. Compared to gustation, olfaction has fewer receptors and fewer receptor categories.
B. Eating a high glucosamine-containing meal will trigger the umami receptors.
C. All chemicals detected in the nose have that information is sent to the brain.
D. Detecting odors is easiest in a very humid environment (i.e., not a very arid one).
D. Detecting odors is easiest in a very humid environment (i.e., not a very arid one).

A. Compared to gustation, olfaction has MORE receptors and MORE receptor categories.
B. Eating a high glucosamine-containing meal will trigger the FAT receptors.
C. NOT ALL chemicals detected in the nose have that information is sent to the brain.
In our skeletal muscles, per starting compound, the initial source of ATP contributes ____ ATP(s) and the source that is indirectly dependent on oxygen contributes ____ ATP(s).
A. 2 - 2
B. Over 20 - 2
C. 1 - 2
D. 2 - over 20
C. 1 - 2

1st source: creatine phosphate
2nd source: glycolysis
TAs Chelsea and Keenan often sit together during the lectures. During a recent lecture, they had ___ sensory detection and ___ perception.
A. Identical - identical
B. Similar - identical
C. Identical - different
D. Similar - different
D. Similar - different
Which is a correct statement about skeletal muscle contraction?
A. During crossbridge cycling, our Equation #1 does not occur as a part of the flexing of the crossbridge.
B. An ATP antagonist could be found bound to both myofilaments.
C. A myofiber in rigor mortis has its crossbridges deflexed.
D. Calcium moves out of the sarcoplasmic reticulum via ATPase pumps.
A. During crossbridge cycling, our Equation #1 does not occur as a part of the flexing of the crossbridge.

B. An ATP antagonist could be found ONLY bound to MYOSIN myofilaments.
C. A myofiber in rigor mortis has its crossbridges FLEXED.
D. Calcium moves out of the sarcoplasmic reticulum via Ca 2+ CHANNELS.
Phys Phab Nick and Lauren are at the Jesse Owens Memorial Stadium to do some running. Nick runs a 100-meter sprint that lasts about 13 seconds. Lauren jogs four miles in about 45 minutes. Nick's main energy source during his sprint was ___. Lauren's main source at the 10-minute mark of her jog was ___.
A. Oxidative phosphorylation - Kreb's Cycle
B. Creatine phosphate - glycolysis
C. Creatine phosphate - oxidative phosphorylation
D. Oxidative phosphorylation - glycolysis
C. Creatine phosphate - oxidative phosphorylation
Brutus Buckeye is observing a myofiber that is not contracting even though its associated neuron is working properly. Consequently, he correctly realizes that the lack of contraction could be due to
A. A lack of calcium in the interstitial fluid.
B. An agonist present in the ATP site of myosin.
C. An antagonist present in the calcium site of tropomyosin.
D. A lack of acetylcholine in the synapse.
B. An agonist present in the ATP site of myosin.

A. A lack of calcium in the SARCOPLASMIC RETICULUM.
C. An antagonist present in the calcium site of TROPONIN.
D. Acetylcholine is uneffected.
During an isometric contraction, the level of cytosolic calcium is ___ resulting in the shortening of ___.
A. Decreasing - sarcomeres
B. Decreasing - I bands
C. Increasing - sarcomeres
D. Increasing - A bands
C. Increasing - sarcomeres

B. INCREASING - I bands
The impaired release of which neurotransmitter could directly result in the paralysis of a skeletal muscle?
A. Norepinephrine
B. Acetylcholine
C. Epinephrine
D. Actually, all three are needed
B. Acetylcholine
To prepare for this assessment, you found muscle pictures online. One picture had a very unequal striation pattern (i.e., two colors not balanced in widths). You correctly realize that the image was
A. Of a contracted skeletal muscle with decreased A band sizes,
B. Smooth muscle.
C. Of a muscle that was generating tension but not necessarily shortening.
D. Of myofibers in which calcium is bound to tropomyosin.
C. Of a muscle that was generating tension but not necessarily shortening.

A. Of a contracted skeletal muscle with decreased I band sizes.
B. Skeletal muscle
D. Of myofibers in which calcium is bound to TROPONIN
Dr. Gray's dog, Pet Y, jumped into a pile of smelly garbage while Dr. Gray was not looking. Dr. Gray was initially confused why she moved away when Pet Y approached her but, when she smelled the dog, Dr. Gray correctly realized that
A. Her orbitofrontal cortex was responsible for her recognizing the garbage smell.
B. Her initial response was due to the actions of her primary olfactory cortex.
C. Both statements are correct.
D. Neither statement is correct.
C. Both statements are correct.

Incorrect:
A. Her OLFACTOFRONTAL cortex was responsible for her recognizing the garbage smell.
B. Her initial response was due to the actions of her primary olfactory MEDULLA.
Which is a correct statement about an eccentric contraction? A. The load is greater than the tension. B. The load is independent of the muscle. C. The muscle will shorten. D. All three statements are correct.A. The load is greater than the tension. B. The load is DEPENDENT of the muscle. C. The muscle will LENGTHEN.While take a self-care break, Dr. Scarlet was first liften fairly light weights and then quite heavy ones. Dr. Scarlet correctly realized that the heavier weights would cause ___ than the lighter weights. A. A smaller response B. A shorter latent period. C. A higher velocity D. All three statements are correct.A. A smaller response B. A LONGER latent period. C. A LOWER velocityIn 1810 Ludvig Jacobson discovered and described the impacts of the vomeronasal organ in many mammals, including humans. Based on his work, we can correctly state that A. It will result their behavior subconsciously when this organ is activated. B. This organ is a part of the external chemosensory system. C. Both statements are correct. D. Neither statement is correct.C. Both statements are correct. Incorrect: B. This organ is a part of the OLFACTION system.A recent Daily Phys article discussed how a new creatine-based supplement could help workout performance. When considering your own use of the supplement, you correctly realize that A. It will result in the development of osmotic movement out of your myofibers. B. It could result in more ATP available at the start of your workout. C. It will impact impact an ATP production pathway that is dependent on oxygen. D. All three statements are correct.B. It could result in more ATP available at the start of your workout. (creatine phosphate) A. It will result in the development of osmotic movement INTO your myofibers. C. It will impact impact an ATP production pathway that is INDEPENDENT of oxygen.Which is a correct statement about the neuromuscular junction? A. The impact of multiple motor motor neurons on the myofiber increases the contraction strength. B. To relax the myofiber, a motor neuron will not hyperpolarize it. C. Acetylcholinesterase is sometimes active and present in the myofiber's membrane D. All three statements are correct.B. To relax the myofiber, a motor neuron will not hyperpolarize it. A. The impact of multiple motor motor neurons on the myofiber DECREASES the contraction strength. C. Acetylcholinesterase is ALWAYS active and present in the myofiber's membrane