In order for a sensation to become a perception,
A) it must be received by the somatosensory cortex.
B) the individual must vocalize about it.
C) it must arrive over fast-conducting nerve fibers.
D) the other senses must be silent.
E) it must be received by the pulvinar nucleus of the thalamus.
Answer: A
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If all other factors remain the same, which of these results in an increase in the amount of oxygen bound to hemoglobin?
A. Increased plasma temperature B. Increased plasma [2,3 diphosphoglycerate] C. Increased plasma [H+] D. Increased plasma [carbon monoxide] E. Increased plasma PO2
Match each of the terms or structures with its definition, description, or function.
a. keratin b. stratum germinativum c. stratum corneum d. hair papilla e. hair shaft f. lunula g. cuticle h. nail bed i. eccrine gland j. apocrine gland 1. _____ Skinfold that covers the root of the nail 2. _____ Outermost layer of the epidermis 3. _____ Sweat gland distributed over almost all of the body 4. _____ Part of the hair visible above the skin 5. _____ A tough protein that fills the outermost layer of skin cells 6. _____ Layer of epithelial tissue under the nail 7. _____ Sweat glands concentrated in the axillae and in the genital area 8. _____ Layer of the epidermis that undergoes constant mitosis 9. _____ White crescent-shaped area at the base of the nail 10. _____ Cap-shaped cluster of cells from which hair growth begins
As blood travels through the venous system toward the heart, why do the veins become larger in diameter?
A) The transition causes the resistance to increase further so that the flow rate of blood increases. B) The transition causes the resistance to decrease further so that the flow rate of blood increases. C) The transition causes the resistance to decrease further so that the flow rate of blood decreases. D) The transition causes the resistance to increase further so that the flow rate of blood decreases. E) The transition reflects no change in the resistance, but causes the flow rate of blood to increase.
What organ system is responsible for communication and hormone production?
A. Cardiovascular system B. Endocrine system C. Lymphatic system D. Nervous system