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Example Questions
Example Question #53 : Endocrine System
Which of the following hormones is not released by the anterior pituitary gland?
Thyroid-stimulating hormone (TSH)
Prolactin
Oxytocin
Growth hormone (GH)
Oxytocin
The anterior pituitary is responsible for releasing a large number of hormones; however, oxytocin is released by the posterior pituitary. Two of oxytocin's most important functions include stimulating uterus contractions and stimulating milk production by the mammary glands.
Prolactin stimulates milk release from the mammary glands.
Thyroid-stimulating hormone stimulates the release of hormones from the thyroid gland.
Growth hormone stimulates the growth of bones and stimulates the liver to release insulin-like growth factors.
It is important to note that at least one hormone from the hypothalamus is used to regulate each of the hormones released by the anterior pituitary—for example, the anterior pituitary gland will only release prolactin if the hypothalamus releases prolactin-releasing hormone.
Example Question #4 : Understanding Glands
Chemical messengers released in the blood to stimulate or inhibit the function of another organs are known as __________.
second messengers
platelets
hormones
enzymes
electrolytes
hormones
A hormone is a chemical formed in one organ and carried by the blood to stimulate or inhibit the function of another organ.
Enzymes are protein molecules that carry out catalytic functions. Electrolytes are simply ions dissolved in solution. Second messengers are relay molecules between a signal and its ultimate effect, such as the molecules that carry signals from the cell membrane to the nucleus to affect transcription. Platelets are cell fragments in the blood that help form clots to heal injuries.
Example Question #3 : Understanding Glands
Which of the following is produced by the pituitary gland?
Insulin
Estrogen
Epinephrine
Testosterone
Follicle-stimulating hormone
Follicle-stimulating hormone
The hormones secreted by the pituitary gland are FLAT PEG: Follicle-stimulating hormone, luteinizing hormone, adrenocorticotropic hormone, thyroid-stimulating hormone, prolactin, endorphins, and growth hormone. Testosterone is produced in the testes in males, and in the adrenal gland in both males and females. Insulin is produced by the pancreas. Estrogen is produced by the ovaries in females, and in the adrenal gland in both males and females.
Example Question #71 : Nervous System
Which of the following is a not a function of the medulla oblongata?
Control cardiac rate
Control breathing rate
Control vomiting reflexes
Control blood pressure
Control speech patterns
Control speech patterns
The medulla oblongata is in the lower half of the brainstem. It controls a variety of functions, mostly involuntary and essential. Heart beat, breathing, and blood pressure are controlled in the medulla oblongata, as is the vomiting reflex.
Speech is controlled by Broca's area, which is located in the frontal lobe of the cerebrum.
Example Question #1 : Understanding The Brain And Brain Structures
What is the primary function of the occipital lobe?
Integrating tactile input
Integrating auditory input
Conscious thought
Integrating visual input
Integrating visual input
Each answer corresponds to one lobe of the cerebrum. The frontal lobe is responsible for conscious thought, as well as many other functions. The parietal lobe is responsible for integrating tactile information. The temporal lobe has the functions of interpreting smell and sound. The occipital lobe is associated with processing visual information.
Example Question #14 : Neural Anatomy
What is the fluid in the anterior chamber of the eye called?
Galen humor
All of these refer to the same structure
Hippocratic humor
Aqueous humor
Vitreous humor
Aqueous humor
The eye is divided into two chambers by the lens: the anterior and posterior chambers. The anterior chamber is filled with aqueous humor, while the posterior chamber is filled with vitreous humor. Aqueous humor nourishes the eye and maintains intraocular pressure. Aqueous humor is also important in the refraction of light, which allows humans to distinguish clear images and colors.
Hippocratic and Galen humor do not exist. Hippocrates and Galen were two ancient physicians who would use the four humors (yellow bile, black bile, phlegm, and blood) to diagnose and treat patients.
Example Question #72 : Nervous System
A patient is taken to the hospital after suffering severe head trauma. He is unconscious for two days before waking up. Upon standing, the patient finds he has moderate trouble walking straight and has difficulty maintaining his balance.
Based on these symptoms, what part of the patient's brain do you suspect was damaged in the accident?
The amygdala
The cerebellum
The cerebrum
The hypothalamus
The medulla oblongata
The cerebellum
The cerebellum is mainly responsible for fine tuning the motions of the body, including balance and coordination. As a result, damage to this region would cause difficulty walking straight and maintaining balance.
Example Question #531 : Systems Physiology
Unlike the spinal cord, the brain mainly has grey matter on the __________ and white matter on the __________.
outermost layer . . . inner layer
left half . . . right half
right half . . . left half
inner layer . . . outermost layer
outermost layer . . . inner layer
Unmyelinated nervous system components make up grey matter, while myelinated axons make up white matter. The cerebral cortex on the surface of the brain contains unmyelinated neural tissue, namely the cell bodies of neurons in the central nervous system. This region is rich in connections. Below its surface lie many myelinated axon tracts to inner nuclei, the cerebellum, other areas of the cortex, and the spinal cord.
Example Question #81 : Nervous System
Please complete the following statement.
The presence of __________ in the brain indicates a modification to __________.
the corpus callosum. . . circulation patterns
folds. . . surface-area-to-volume ratios
white matter. . . electro-chemical gradients
multiple lobes. . . surface-area-to-volume ratios
gray matter. . . sunlight exposure
folds. . . surface-area-to-volume ratios
Folds are present in the human brain due to the rapid evolution of brain-related tasks while the skull shape and size remained relatively constant; therefore, folds are present as modifications to limited surface-area-to-volume ratios in the skull cavity.
Example Question #533 : Systems Physiology
Which of the following is the best explanation for why we have a "blind spot?"
There are both rods and cones present, but they do not contain opsins
None of the choices are true
The optic nerve exits the optic disc through the blind spot
There are only rods in the blind spot, but no cones
There are only cones in the blind spot, but no rods
The optic nerve exits the optic disc through the blind spot
In the blind spot, there is a lack of photoreceptors as the optic nerve exits the optic disk. We normally overcome this automatically when our brains use the information of the surrounding visual field and "fills in" the blind spot.
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