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Anatomy Ch. 1

Uilani

QuestionAnswer
The impact of effector activity on sensors may be positive or negative. Therefore, homeostatic controld mechanisms are categorized as organs that are directly influences by physiological variables or mechanisms.
The concept that information may flow ahead to another process to trigger a change in the anticipation of an event that will follow is called feed-forward
What term descrives a signal traveling toward a particular center or point of reference? afferent
Local control or _________, intrinsic mechanisms ofter make use of chemical signals. autoregulation
To accomplish self-regulation, a highly complex and intergrated communication control system or network is required. This type of network is called a(n) feedback control loop
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
The normal reading or range is called the set point
Effectors can be described as organs that directly influence controlled physiological variables
Which of the following is a basic component of very feedback control loop All of these are components of a feedback control loop
Which level of control operates at the cell level, ofter using genes and enzymes to regulate cell function? intracellular regulation
The relatively constant state maintained by the body is known as homeostasis
Extrinsic control usually involves which mode of regulation? Both A & B. Nervous and Endocrine
Many complex processes of the body are coordinated at many levels. These include All of the Above. Intracellular, Intrinsic, Extrinsic.
Events that lead to an immune response to an infection or the formation of a blood clot are examples of positive feedback
Processes for maintaining or restoring homeostasis are known as homeostatic control mechanisms
The body naturally changes some set point to different values at different times of the day. These daily cycles are called circadian cycles
Of the 11 major body systems, which is the least involved in maintaining homeostatis? Reproductive
Positive-feedback control systems accelerate change
Which of the following is a protein substance with no DNA or RNA and is though to be the cause of mad cow disease? Prion
Epidemiology is the study of the _____ of diseases in human populations. All of the above. Occurrence, distribution, transmission
Homeostasis can best be described as: a state of relative constancy.
Shivering to try to raise your body temperature back to normal would be an example of: both A and C. The body trying to maintain homeostasis. a positive-feedback mechanism
Of the 11 major body systems, which is the least involved in maintaining homeostasis? Reproductive
Negative-feedback mechanisms: All of the above are correct. Minimize changes in blood glucose levels., maintain homeostasis, are responsible for an increased rate of sweating when air temperature is higher than body temperature.
The contraction of the uterus during the birth of a baby is an example of _____ feedback. positive
The body’s thermostat is located in the: hypothalamus.
Intrinsic control: is sometimes called autoregulation.
Which of the following is not one of the basic components in a feedback control loop? Transmitter
Positive-feedback control systems: accelerate a change.
Of the pathogenic organisms, which of the following are the most complex? Tapeworms
Intracellular parasites that consist of DNA or RNA surrounded by a protein coat and sometimes by a lipoprotein envelope are called: viruses
The term that literally means self-immunity is: autoimmunity
The normal reading or range of normal is called the: set point
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
Which of the following may put one at risk for developing a given disease? All of the above. Environment, stress, lifestyle.
Negative-feedback control systems: oppose a change
Which of the following is a protein substance with no DNA or RNA and is thought to be the cause of mad cow disease? Prion
Pathogenesis can be defined as: the course of disease development.
Which of the following is a basic component of every feedback control loop? All of these are components of a feedback control loop. sensor mechanism, integrating center, effector, feedback
Created by: ubacoro
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