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Physiology Final
| Question | Answer |
|---|---|
| Shivering to try to raise your body temperature back to normal would be an example of: the body trying to maintain homeostasis. a positive-feedback mechanism. a negative-feedback mechanism. both A and C. | both A and C. |
| Which energy-releasing or energy-transferring molecule does not contain a nucleotide? FAD Creatine phosphate NAD ATP | Creatine phosphate |
| Which cells electrically insulate axons to increase the speed of conduction? Oligodendrocytes Schwann cells Astrocytes Both A and B | Both A and B |
| The substance that attracts oxygen in the myoglobin molecule is: hemoglobin. calcium. iron. ATP. | iron. |
| The brief period during which a local area of an axon's membrane resists re-stimulation is called the __________ period. | refractor |
| Which is true of a neuron with a resting potential? | The sodium pump has moved Na+ to the outside of the plasma membrane |
| All of the following cranial nerves are involved in proprioception except the: vagus. hypoglossal. accessory. abducens. | vagus |
| A child was frightened by a large dog. The pupils of the child’s eyes became dilated, and the heart and respiratory rates increased. These symptoms were caused by stimulation of: | the sympathetic nervous system. |
| Impulses sent over which of the following tracts could result in voluntary movement, especially of the hands, fingers, feet, and toes of the opposite side? | Ventral corticospinal |
| If the dorsal root ganglia of the spinal nerve were destroyed, a person would lose _____ related to that pathway. | both reflex activity and sensation |
| All of the following are true statements except: | aspirin produces some of its effects by increasing PGE synthesis. |
| The ability of our immune system to attack abnormal or foreign cells but spare our own normal cells is called: | adaptive immunity. |
| Recognition of antigens by antibodies occurs when an | antigen’s epitopes fit into and bind to an antigen molecule’s antigen-binding site. |
| Which of the following is a powerful poison that acts directly on any cell and quickly kills it? | lymphotoxin |
| External respiration can be defined as: | the exchange of gases between the lung and the blood capillaries in the lung. pulmonary ventilation |
| Which of the following is not a function of the liver? Detoxification Secretion of insulin Storage of iron and vitamins Production of bile | Secretion of insulin |
| When the effective filtration pressure equals zero: | no net transfer of water occurs between blood and interstitial fluid |
| Cerebrospinal fluid is part of the _____ fluid. | extracellular |
| The main factor determining male fertility is the: | number of sperm ejaculated |
| The phase of the menstrual cycle that occurs between the expulsion of the ovum from the ovary and the onset of menses is the _____ phase. | luteal |
| Which of the following functions is not usually associated with the uterus? | Fertilization |
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k8y
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