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Poonam Singh
Physiology week 7-12
| Question | Answer |
|---|---|
| The action potential seems to “leap” from node to node along a myelinated fiber. This type of impulse regeneration is called __________ conduction. | saltatory |
| Which membrane receptor acts to directly change ion permeability when stimulated? | Gated-channel receptor |
| There are two types of synapses—the electrical synapse and the __________ synapse. | chemical |
| The neurotransmitter(s) that inhibit(s) the conduction of pain impulses is(are): | enkephalins. |
| Severe depression can be caused by a deficit in certain brain synapses of: | amines. |
| The active transport mechanism in the plasma membrane that transports sodium and potassium ions in opposite directions and at different rates is the | sodium-potassium pump. |
| In a healthy adult, a well-placed tap on the knee will result in a: | stretch of the tendon, the quadriceps femoris, and thereby stimulation of the muscle spindles. |
| The cortex is capable of storing and retrieving information from both short-term and long-term | memory. |
| 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. |
| In comparison with the nervous system, the regulatory effects of the endocrine system are: | slow to appear but long-lasting. |
| Erythrocytes begin their maturation sequence in red bone marrow from nucleated cells known as: | hematopoietic stem cells. |
| Starling’s law of the heart states that, within limits, the longer, or more stretched, the heart fibers are at the beginning of the contraction, the | stronger the contraction. |
| The chemoreceptors in the carotid bodies are particularly sensitive to: | hypercapnia. |
| The term used to describe the collection of mechanisms that influence the circulation of blood is: | hemodynamics. |
| Because T cells attack pathogens more directly, T-cell immune mechanisms are classified as _____ immunity. | cell-mediated |
| Memory cells: | become plasma cells when exposed to an antigen. |
| Which organ has several functions, including defense, hematopoiesis, red blood cell and platelet destruction, and blood reservoir? | spleen |
| Molecules formed by the reactions of the complement cascade assemble themselves on the enemy cell’s surface, which results in | cytolysis. |
| Dalton law states that the partial pressure of a gas in a mixture of gases is _____ to the total pressure of the mixture. | directly related to the concentration of that gas in the mixture and |
| Which gas law deals with the solubility of gases in solution? | Henry |
| The major form by which carbon dioxide is transported in the circulatory system is: | as bicarbonate ions. |
| The function of the vibrissae in the vestibule is to: | provide an initial “filter” to screen particulate matter from air that is entering the system. |
| The ability of the lungs and thorax to stretch is referred to as | compliance. |
| During inspiration, as the size of the thorax increases, the | intrapleural and alveolar pressures decrease. |
| During which stage of swallowing is there a risk of food entering respiratory pathways? | Oropharyngeal |
| The final step in lipid transport by the intestines is the formation of | chylomicrons. |
| Which of the following is not a function of the liver? | Secretion of insulin |
| The hormone that stimulates the gallbladder to release bile is: | cholecystokinin. |
Created by:
PoonamSingh
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