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Stack1 Physiology
MidTerm A&P
Question | Answer |
---|---|
Homeostasis can best be described as: | a state of relative constancy. |
Of the 11 major body systems, which is the least involved in maintaining homeostasis? | Reproductive |
If the secretion of oxytocin during childbirth operated as a negative-feedback control loop, what effect would it have on uterine contractions? | Oxytocin would inhibit uterine contractions. |
Prostaglandins and steroids share which of the following characteristics? | Both have a ring structure in their molecule. |
Which of the following is not true of RNA? It contains ribose sugar. It contains adenine. It is composed of smaller molecules called nucleotides. All of the above are true of RNA. | All of the above are true of RNA. |
The term glycoprotein, a combination of two words, tells you that the compound is made of _____, with _____ being the dominant component. | carbohydrate and protein; protein |
During which stage of mitosis do the centrioles move to the opposite poles of the cell? | Prophase |
Which is not true about the sodium and potassium pump? uses cellular energy. Sodium moves into the cell and potassium moves out of the cell. A carrier system is used. It can move substances against their concentration gradient. | Sodium moves into the cell and potassium moves out of the cell. |
Transcription can be best described as the: | synthesis of mRNA. |
NaCl would move through the cell membrane in which direction? | Both into and out of the cell |
Which cells electrically insulate axons to increase the speed of conduction? | Oligodendrocytes and Schwann cells |
Which cells help destroy pathogens and damaged tissue in the brain? | Microglia |
The cell organelles that synthesize organic matrix substances in bone formation are: | endoplasmic reticulum and Golgi apparatus. |
During childbirth, a baby passes through an imaginary plane called the: | pelvic outlet. |
Most body movements are _____ contractions. | isotonic |
The ability of muscle cells to respond to nerve stimuli is called: | irritability. |