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A and P 2 - Test 1
Stack #83843
Question | Answer |
---|---|
If you enter a room and smell a strong odor but the odor soon seems to fade away, you have experienced -. | sensory adaptation |
Pain receptors are generally stimulated by -. | factors that can cause tissue damage |
The olfactory receptors are examples of -. | chemoreceptors |
Taste receptors are -. | modified epithelial cells |
As a result of the tympanic reflex, - | vibrations are transmitted less effectively to the inner ear. |
What are the 4 primary taste sensations? | sweet, salty, bitter, sour |
The hearing receptors are most closely associated with -. | the organ or Corti |
The range of human hearing is about -. | 20-20,000 vibrations per second |
The lens of the eye thickens when the -. | ciliary muscles contract |
The sets of color receptors within the retina are sensitive to lights are -, -, & -. | red, green, blue |
The Golgi tendon organ is stimulated more when -. | muscle tension increases |
When entering a dark room on a sunny day, why does it take some time to see in the dark room? | It takes some time for the retina to rebuild its rhodopsin stores from scotopsin and retinene. |
Rhodopsin is found in -. | rod cells |
Temperature senses employ two types of -. | free nerve endings |
If a person's right visual cortex is damaged, the injury will most likely affect vision from -. | nasal side of one eye and the temporal side of the other eye |
A sensation is -, and projection of a sensation is -. | a feeling that results from sensory stimulation; brain causing it to seem to come from the receptors being stimulated |
By providing information concerning the body's internal status, the senses function to do which of the following? | maintain homeostasis |
What is another name for pain receptors? | nociceptors |
Movement of hair cells in the semicircular canals signals -. | the direction of motion |
Bleaching is a result of -. | exposing the retina to excess sunlight |
True or False: The auditory ossicles are located within the inner ear. | False (They're located in the middle ear.) |
True or False: Receptors that are stimulated by changes in chemical concentrations are called thermoreceptors. | False (They're called chemoreceptors.) |
True or False: Pain sensations arising from visceral organs may be caused by the stretching of tissues. | True |
True or False: Endorphins are neuropeptides that have morphinelike actions. | True |
True or False: Referred pain occurs when the brain projects the sensation back to the original source in the body from which the pain originated. | False (It feels like it's originating from a part other than the site being stimulated.) |
True or False: The secretion of pituitary hormones is largely controlled by the thalamus. | False (They're mostly controlled by the hypothalamus.) |
True or False: Oxytocin acts primarily on the kidneys and causes them to conserve water. | False (It's primarily produced by the posterior pituitary gland, and works as an antifiuretic, contracts smooth muscles in the uterine wall, and makes the breasts start lactating.) |
True or False: Parathyroid hormone stimulates the activity of bone-resorbing osteoblasts. | Flase (Parathyroid hormone stimulates bone resorption by osteoCLASTS & nhibits the activity of osteoblasts.) |
True or False: Cells of the adrenal medulla are closely associated with preganglionic fibers of the parasympathetic division of the autonomic nervous system. | False |
True or False: The sex hormones from the adrenal cortex are primarily androgens. | True |
Steroid hormones are soluble in lipids, combine with protein receptor molecules, & act by causing the synthesis of messenger RNA molecules. | True |
Which of the following is secreted by nerve fibers in the posterior lobe of the pituitary gland? | Antidiuretic hormone (ADH) |
Thyroxine functions to -. | enhance the rate at which proteins are synthesized |
The secretion of parathyroid hormone is controlled primarily by the -. | concentration of blood calcium |
What 2 hormones are secreted by the adrenal medulla? | epinephrine & noepinephrine |
Aldosterone promotes the homeostasis of ions by causing the kidneys to -. | conserve sodium and excrete potassium |
Insulin causes -. | a decrease in the concentration of blood glucose |
As a result of the general response to stress, the blood concentrations of epinephrine -. | and cortisol rise |
Target cells for releasing hormones are in the -. | anterior pituitary gland |
Which of the following has both endocrine and exocrine functions? | The pancreas |
Various anti-inflammatory drugs, such as aspirin, that are used to treat the symptoms of rheumatoid arthritis act by inhibiting the production of -. | prostaglandins |
The blood concentration of growth hormone -. | rises at puberty and levels off after adolescence |
The condition called diabetes insipidus is caused by -. | a lack of ADH |
Oxytocin is sometimes administered to women following childbirth to stimulate -. | uterine contractions |
Triiodothyronine is a hormone secreted by the -. | thyroid gland (T3, along with T4 & calcitonin) |
A person with an abnormally high metabolic rate, who is underweight, and has protruding eyes is exhibiting symptoms of -. | hyperthyroidism |
Diabetes mellitus is characterized by glucose in the urine, urine with high osmotic pressure, & excessive urine production. | True |
Cortisol is useful in controlling inflammation reactions because it decreases the permeability of capillaries, inhibits the synthesis of prostaglandins, & stabilizes lysosomal membranes. | True |
A hormone is defined as a -, & a target cell is defined as -. | substance that has a metabolic effect on another cell; a cell that possesses specific receptors for hormone molecules |
What percentage of T4 is converted to T3 in peripheral tissues? | 33% |