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Nicole Jackson

Human Physiology weeks1-6

QuestionAnswer
Because negative feedback control systems oppose changes that are opposite in direction to the initial disturbance, they are slowed or maintained in the homeostatic range.
Extrinsic control usually involves which mode of regulation? Nervous and endocrine
The impact of effector activity on sensors may be positive or negative. Therefore, homeostatic control mechanisms are categorized as organs that are directly influenced by physiological variables or mechanisms.
Events that lead to an immune response to an infection or the formation of a blood clot are examples of positive feedback
Effectors can be described as organs that directly influence controlled physiological variables.
What term describes a signal traveling toward a particular center or point of reference? afferent
Which of the following is a basic component of every feedback control loop? senor mechanism, feedback, effector, integrating center
Intrinsic control is sometimes called autoregulation
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.
The body’s thermostat is located in the hypothalamus.
When two amino acids are joined, a peptide bond is formed, and an H+ ion is released. False
What term is often used to describe certain arrangements of atoms attached to the carbon core of many organic molecules? functional group
A saturated fatty acid is one in which all available bonds of its hydrocarbon chain are filled.
RNA and DNA have the same pyrimidine bases but different purine bases False
The formation of sucrose involves the removal of a molecule of water. This is called: hydrolysis.
A _____ is a functional group that is temporarily unattached and is highly reactive because of unpaired electrons. free radical
Humans can synthesize 13 of 21 basic amino acids; the remaining 8, which must be included in the diet, are called: essential amino acids
Which lipid is part of vitamin D? Steroids
Created by: nicolej6445
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