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Kim Ferguson
Physiology Week 9
| Question | Answer |
|---|---|
| A small molecule binds to a G protein, preventing its activation. What direct effect will this have on signaling that involves cAMP? | 2. Adenylyl cyclase will not be activated. |
| Which hormone is released by the pituitary to stimulate the thyroid gland? | thyrotropin |
| Which hormone produced by the adrenal glands is responsible for mobilization of energy stores? | Cortisol |
| What should you avoid doing in the middle of your sleep cycle that would lower melatonin? | turning on the lights |
| What goes wrong in the function of insulin in type 2 diabetes? | the cells don't respond to insulin like they should |
| Which ear structures are responsible for the amplification and transfer of sound from the external ear to the inner ear? | The ossicles |
| Based on the animation, where do frequencies—from high to low pitches—cause activity in the hair cells within the cochlear duct? | the apex of the cochlea between the base and the apex of the cochlea |
| Specialized cells in the retina called ganglion cells convert the light rays into ________________. | electrical signals |
| Which eye is visualizing leftward stimulus? | right eye |
| When the right cornea senses a tactile stimulus, what happens to the left eye? | blinks |
| Visceroceptors are located in which of the following? | Internal organs |
| The receptors responsible for sensing crude and persistent touch are the: | Ruffini corpuscles. |
| The sequence of auditory ossicles in the middle ear starting at the tympanic membrane and ending at the oval window is: | malleus, incus, and stapes. |
| The immediate effect of a steroid hormone on a cell is the: | transcription of RNA. |
| Which of the following is true about pain receptors? | Alpha fibers are associated with sharp, localized pain. |
| Accommodation for near vision necessitates | an increase in the curvature of the lens. constriction of the pupils. convergence of the two eyes. all of the above. |
| Which of the following statements is not true of the pineal gland? | Melatonin is stimulated by the presence of sunlight. |
| The somatic senses enable us to detect sensations, including: | touch. temperature. pain. all of the above. |
| The clear and potassium-rich fluid that fills the labyrinth is | endolymph. |
| Which of the following is not a characteristic of the endocrine system? | Chemical messenger travels a short distance. |
| If you slammed your finger in a car door, it would stimulate _____ pain fibers. | acute |
| The type of cells that secrete ACTH are: | corticotrophs. |
| Dynamic equilibrium depends on the functioning of the | crista ampullaris. |
| All of the following are true statements except: | aspirin produces some of its effects by increasing PGE synthesis. |
| The olfactory tract carries impulses associated with: | smell. |
| Which of the following is not true of a receptor potential? | It follows the all-or-none law. |
| Movement of hair cells in the organ of Corti against the _____ membrane can stimulate nerve impulse condition. | tectorial |
| When you are looking at a large green field, which cones would be sending the green wavelength to the brain? | M |
| The two-point discrimination test can be used to measure: | the sensitivity of the skin in various parts of the body. |
| The last step in the nonsteroid hormone mechanism of action is: | protein kinases activate other enzymes. |
| The production of thyroid hormone is stimulated by another hormone from the: | anterior pituitary. |
| When a small amount of one hormone allows a second hormone to have its full effect, the phenomenon is called: | permissiveness. |
| Which is not true of the hormone somatostatin? | It stimulates the secretion of insulin. |
| The major hormone produced by the corpus luteum is: | progesterone. |
| Sensory impulses ending in what part of the CNS trigger imprecise or “crude” sensation awareness? | Thalamus |
| All of the following are nonsteroid hormones except: | cortisol. |
| In comparison with the nervous system, the regulatory effects of the endocrine system are: | slow to appear but long-lasting. |
| Clearness or sharpness of visual perception is known as: | visual acuity |
| One of the few hormones that functions on a positive-feedback loop is: | oxytocin. |
| Which of the following is a function of glucagon? | Tends to increase blood glucose concentrations |
Created by:
Kferguson76
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