BIOL 2401 Anatomy and Physiology (Chapter 1) Questions
With Complete Solutions
Movement
Motion of whole body, individual organs, single cells, or
organelles inside of cell
Growth
An increase in size and complexity, due to an increase in the
number of cells, size of cells, or both.
Differentiation
Change in a cell from a non-specialized state to a specialized
state
Reproduction
Refers either to formation of new cells for growth, repair or
replacement OR the production of a new individual
Homeostasis
Condition in which the body's internal environment remains
within certain physiological limits
Extracellular Fluid (ECF)
Fluid outside of body cells
Intracellular Fluid (ICF)
Fluid within body cells
When is an organism said to be in homeostasis?
, Conditions in the internal environment are maintained within
physiological limits
Stress
Any external or internal stimulus that creates an imbalance in
the internal environment
How does the nervous system regulate homeostasis?
-Detects body changes
-Sends nerve impulses to counteract the stress
How does the endocrine system regulate homeostasis?
Secreting hormones
Feedback System (loop)
A cycle of events in which information about the status of a
condition is continually monitored and fed back (reported) to a
central control region.
Stimulus
Any stress that changes a controlled condition
Three basic components of a feedback system:
-Control Center
-Receptor
-Effector
Control Center
Determines the point at which a controlled condition should be
maintained
With Complete Solutions
Movement
Motion of whole body, individual organs, single cells, or
organelles inside of cell
Growth
An increase in size and complexity, due to an increase in the
number of cells, size of cells, or both.
Differentiation
Change in a cell from a non-specialized state to a specialized
state
Reproduction
Refers either to formation of new cells for growth, repair or
replacement OR the production of a new individual
Homeostasis
Condition in which the body's internal environment remains
within certain physiological limits
Extracellular Fluid (ECF)
Fluid outside of body cells
Intracellular Fluid (ICF)
Fluid within body cells
When is an organism said to be in homeostasis?
, Conditions in the internal environment are maintained within
physiological limits
Stress
Any external or internal stimulus that creates an imbalance in
the internal environment
How does the nervous system regulate homeostasis?
-Detects body changes
-Sends nerve impulses to counteract the stress
How does the endocrine system regulate homeostasis?
Secreting hormones
Feedback System (loop)
A cycle of events in which information about the status of a
condition is continually monitored and fed back (reported) to a
central control region.
Stimulus
Any stress that changes a controlled condition
Three basic components of a feedback system:
-Control Center
-Receptor
-Effector
Control Center
Determines the point at which a controlled condition should be
maintained
