SCI 221 EXAM QUESTIONS AND ANSWERS
LATEST UPDATE
Set Point
The normal reading range is called what?
Feedback Control Loop
To accomplish self-regulation, a highly complex and integrated communication control
system or network is required. This type of network is called a(n)
organs that are directly influenced by physiological variables or mechanisms.
The impact of effector activity on sensors may be positive or negative. Therefore,
homeostatic control mechanisms are categorized as
slowed or maintained in the homeostatic range.
Because negative feedback control systems oppose changes that are opposite in
direction to the initial disturbance, they are
Positive Feedback
Events that lead to an immune response to an infection or the formation of a blood clot
are examples of
Homeostasis
The relatively constant state maintained by the body is known as
intracellular, intrinsic, extrinsic.
The relatively constant state maintained by the body is known as
intracellular regulation
Which level of control operates at the cell level, often using genes and enzymes to
regulate cell function?
autoregulation
Local control or _____, intrinsic mechanisms often make use of chemical signals.
sensor mechanism, integrating center, effector, feedback
Which of the following is a basic component of every feedback control loop?
Nervous and Endocrine
Extrinsic control usually involves which mode of regulation?
circadian cycles.
The body naturally changes some set points to different values at different times of the
day. These daily cyles are called
feed-forward
The concept that information may flow ahead to another process to trigger a change in
anticipation of an event that will follow is called
homeostatic control mechanisms.
Processes for maintaining or restoring homeostasis are known as
afferent
What term describes a signal traveling toward a particular center or point of reference?
organs that directly influence controlled physiological variables.
Effectors can be described as
LATEST UPDATE
Set Point
The normal reading range is called what?
Feedback Control Loop
To accomplish self-regulation, a highly complex and integrated communication control
system or network is required. This type of network is called a(n)
organs that are directly influenced by physiological variables or mechanisms.
The impact of effector activity on sensors may be positive or negative. Therefore,
homeostatic control mechanisms are categorized as
slowed or maintained in the homeostatic range.
Because negative feedback control systems oppose changes that are opposite in
direction to the initial disturbance, they are
Positive Feedback
Events that lead to an immune response to an infection or the formation of a blood clot
are examples of
Homeostasis
The relatively constant state maintained by the body is known as
intracellular, intrinsic, extrinsic.
The relatively constant state maintained by the body is known as
intracellular regulation
Which level of control operates at the cell level, often using genes and enzymes to
regulate cell function?
autoregulation
Local control or _____, intrinsic mechanisms often make use of chemical signals.
sensor mechanism, integrating center, effector, feedback
Which of the following is a basic component of every feedback control loop?
Nervous and Endocrine
Extrinsic control usually involves which mode of regulation?
circadian cycles.
The body naturally changes some set points to different values at different times of the
day. These daily cyles are called
feed-forward
The concept that information may flow ahead to another process to trigger a change in
anticipation of an event that will follow is called
homeostatic control mechanisms.
Processes for maintaining or restoring homeostasis are known as
afferent
What term describes a signal traveling toward a particular center or point of reference?
organs that directly influence controlled physiological variables.
Effectors can be described as
