SCI 221 EXAM QUESTIONS AND ANSWERS
LATEST UPDATE
Which level of control operates at the cell level, often using genes and enzymes
to regulate cell function?
intrinsic regulation
extrinsic regulation
extracellular regulation
intracellular regulation
intracellular regulation
To accomplish self-regulation, a highly complex and integrated communication
control system or network is required. This type of network is called a(n)
effector control loop.
internal environmental control loop.
feedback control loop.
cyclical control loop.
feedback control loop.
Many complex processes of the body are coordinated at many levels. These
include
intracellular.
intrinsic.
extrinsic.
All of these are correct.
All of these are correct.
Events that lead to an immune response to an infection or the formation of a
blood clot are examples of
positive feedback.
negative feedback.
inhibitory feedback.
intracellular control.
positive feedback
Effectors can be described as
organs that are able to identify the variable being controlled.
organs that directly influence controlled physiological variables.
a type of communication control system.
inhibitory regulatory organs.
organs that directly influence controlled physiological variables
The relatively constant state maintained by the body is known as
anatomy.
physiology.
metabolism.
homeostasis.
homeostasis
, Processes for maintaining or restoring homeostasis are known as
sensor mechanisms.
integrating mechanisms.
set point mechanisms.
homeostatic control mechanisms.
homeostatic control mechanisms
Extrinsic control usually involves which mode of regulation?
nervous
endocrine
integration
Both A and B are correct.
Both A and B are correct.
What term describes a signal traveling toward a particular center or point of
reference?
efferent
sensory
effector
afferent
afferent
Local control or _____, intrinsic mechanisms often make use of chemical signals.
structural
developmental
autoregulation
autonomous
autoregulation
The normal reading or range is called the
set point.
regulatory range.
feedback point.
integrating range.
set point
Which of the following is a basic component of every feedback control loop?
sensor mechanism
integrating center
effector
feedback
All of these are components of a feedback control loop.
All of these are components of a 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.
excitatory.
passive.
stimulatory.
slowed or maintained in the homeostatic range.
LATEST UPDATE
Which level of control operates at the cell level, often using genes and enzymes
to regulate cell function?
intrinsic regulation
extrinsic regulation
extracellular regulation
intracellular regulation
intracellular regulation
To accomplish self-regulation, a highly complex and integrated communication
control system or network is required. This type of network is called a(n)
effector control loop.
internal environmental control loop.
feedback control loop.
cyclical control loop.
feedback control loop.
Many complex processes of the body are coordinated at many levels. These
include
intracellular.
intrinsic.
extrinsic.
All of these are correct.
All of these are correct.
Events that lead to an immune response to an infection or the formation of a
blood clot are examples of
positive feedback.
negative feedback.
inhibitory feedback.
intracellular control.
positive feedback
Effectors can be described as
organs that are able to identify the variable being controlled.
organs that directly influence controlled physiological variables.
a type of communication control system.
inhibitory regulatory organs.
organs that directly influence controlled physiological variables
The relatively constant state maintained by the body is known as
anatomy.
physiology.
metabolism.
homeostasis.
homeostasis
, Processes for maintaining or restoring homeostasis are known as
sensor mechanisms.
integrating mechanisms.
set point mechanisms.
homeostatic control mechanisms.
homeostatic control mechanisms
Extrinsic control usually involves which mode of regulation?
nervous
endocrine
integration
Both A and B are correct.
Both A and B are correct.
What term describes a signal traveling toward a particular center or point of
reference?
efferent
sensory
effector
afferent
afferent
Local control or _____, intrinsic mechanisms often make use of chemical signals.
structural
developmental
autoregulation
autonomous
autoregulation
The normal reading or range is called the
set point.
regulatory range.
feedback point.
integrating range.
set point
Which of the following is a basic component of every feedback control loop?
sensor mechanism
integrating center
effector
feedback
All of these are components of a feedback control loop.
All of these are components of a 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.
excitatory.
passive.
stimulatory.
slowed or maintained in the homeostatic range.
