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Phys week 9 - S & E
Chapters 23, 24, 25, 26 - Senses & Endocrine
| Visit this link. to watch an animation of the events that occur when a hormone binds to a cell membrane receptor. A small molecule binds to a G protein, preventing its activation. What direct effect will this have on signaling that involves cAMP? | Adenylyl cyclase will not be activated. |
| Visit link, watch an animation showing the role of the hypothalamus and the pituitary gland. Which hormone is released by the pituitary to stimulate the thyroid gland? | thyrotropin |
| Link to view an animation describing the location and function of the adrenal glands. Which hormone produced by the adrenal glands is responsible for mobilization of energy stores? | Cortisol |
| Link to view an animation describing the function of the hormone melatonin. What should you avoid doing in the middle of your sleep cycle that would lower melatonin? | turning on the lights |
| Link to view an animation describing the location and function of the pancreas. What goes wrong in the function of insulin in type 2 diabetes? | the cells don't respond to insulin like they should |
| Video to learn more about how the structures of the ear convert sound waves into a neural signal by moving the “hairs,” or stereocilia, of the cochlear duct. Specific locations along the length of the duct encode specific frequencies, or pitches. The brai | Ossicles |
| learn more about the inner ear and to see the cochlea unroll, with the base at the back of the image and the apex at the front. Specific wavelengths of sound cause specific regions of the basilar membrane to vibrate, much like the keys of a piano produce | the base of the cochlea the apex of the cochlea basilar membrane between the base and the apex of the cochlea Answer: apex of cochlea & between base and apex |
| This video gives an abbreviated overview of the visual system by concentrating on the pathway from the eyes to the occipital lobe. Specialized cells in the retina called ganglion cells convert the light rays into | Electrical signals |
| If movement of a visual stimulus is leftward in one eye and rightward in the opposite eye, the brain interprets this as movement toward (or away) from the face along the midline. Which eye is visualizing leftward stimulus | right eye (opposite eye) |
| Video to learn more about the reflex arc of the corneal reflex. When the right cornea senses a tactile stimulus, what happens to the left eye? | blinks |
| The receptors responsible for sensing crude and persistent touch are the | Ruffini corpuscles |
| Which of the following is not true of a receptor potential? | It follows the all-or-none law. |
| All of the following are true statements except: | there are at least 16 different prostaglandins. the first prostaglandin was identified in semen. aspirin produces some of its effects by increasing PGE synthesis. PGFs have been used to induce labor and accelerate the delivery of a baby. Answer: As |
| When you are looking at a large green field, which cones would be sending the green wavelength to the brain? | M |
| Sensory impulses ending in what part of the CNS trigger imprecise or “crude” sensation awareness? | Thalamus |
| The last step in the nonsteroid hormone mechanism of action is: | protein kinases activate other enzymes |
| The clear and potassium-rich fluid that fills the labyrinth is | endolymph |
| Which is not true of the hormone somatostatin? | It stimulates the secretion of insulin. (It does not!) |
| In comparison with the nervous system, the regulatory effects of the endocrine system are: | slow to appear but long-lasting. |
| All of the following are nonsteroid hormones except | oxytocin. calcitonin. cortisol. glucagon. Answer: Cortisol |
| The major hormone produced by the corpus luteum is: | progesterone |
| The production of thyroid hormone is stimulated by another hormone from the: | anterior pituitary. |
| If you slammed your finger in a car door, it would stimulate _____ pain fibers. | Acute |
| 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. Answer: all of the above |
| Which of the following is true about pain receptors? | Alpha fibers are associated with sharp, localized pain. |
| Clearness or sharpness of visual perception is known as | visual acuity |
| Which of the following is not a characteristic of the endocrine system? | Chemical messenger travels a short distance |
| Which of the following is a function of glucagon? | Tends to increase blood glucose concentrations |
| The somatic senses enable us to detect sensations, including: | touch. temperature. pain. all of the above. Answer: all of the above |
| The olfactory tract carries impulses associated with: | Smell |
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prispeguero
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