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BHSC 1200 Midterm 1 Practice Questions and Answers (100% Pass)
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BHSC 1200 Midterm 1 Practice Questions and Answers (100% Pass)
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©PREP4EXAMS@2024 [REAL-EXAM-DUMPS] Saturday, August 3, 2024 7:34 AMWEST VIRGINIA UNIVERSIRTY- (WV) : 26506
BHSC 1200 Midterm 1 Practice
Questions and Answers (100% Pass)
define anatomy and physiology - ✔️✔️anatomy: science of body structures and the
relationships among them
physiology: science of body function
describe the structural organization of the human body from simplest to most complex -
✔️✔️1) chemical: atoms and molecules
2) cellular: molecules combine to form cells
3) tissue: groups of cells and the materials surrounding them that work together to
perform a particular function
4) organ: structures composed of two or more different types of tissues; have specific
functions and recognizable shapes
5) system: related organs with a common function
6) organismal: all parts of the human body functioning together
1
,©PREP4EXAMS@2024 [REAL-EXAM-DUMPS] Saturday, August 3, 2024 7:34 AM
WEST VIRGINIA UNIVERSIRTY- (WV) : 26506
define homeostasis - ✔️✔️-maintenance of relatively stable conditions in the body's
internal environment
-maintains volume and composition of body fluids
define homeostatic feedback system - ✔️✔️cycle of events in which the status of a body
condition is monitored, evaluated, changed, remonitored, reevaluated, and so on
describe components of homeostatic feedback system - ✔️✔️1) receptor: body structure
that monitors changes in a controlled condition and sends input to a control centre
2) control centre: sets the set point within which a controlled condition should be
maintained, evaluates the input it receives from receptors, & generates output
commands when they are needed
3) effector: body structure that received output from the control centre and produces a
response or effect that changes the controlled conditions
describe and provide an example of a negative feedback system - ✔️✔️-the response of
the effector negates the stimulus; body is brought back into homeostasis; normal range
is achieved; leads to stability
2
, ©PREP4EXAMS@2024 [REAL-EXAM-DUMPS] Saturday, August 3, 2024 7:34 AM
WEST VIRGINIA UNIVERSIRTY- (WV) : 26506
ex/ regulation of blood pressure:
stimulus disrupts homeostasis by increasing controlled condition (blood pressure).
receptor (baroreceptors) send input (nerve impulse) to control centre (brain). Brain
sends output (nerve impulse) to effector (heart and blood vessels) . A response (lower
heart rate and dilate blood vessels) occurs which brings blood pressure back to normal
range
describe and provide an example of a positive feedback system - ✔️✔️-the response of
the effector increases/reinforces change of the stimulus
-body is moved away from homeostasis
-normal range is lost
-used to speed up processes
-leads to instability because output becomes progressively stronger as it is fed back and
reamplified
ex/ contractions during childbirth:
stimulus (contractions of uterine wall forcing baby's head into cervix) increases the
controlled condition (stretching of cervix). receptors (stretch-sensitive nerve cells in
cervix) send input (nerve impulse) to the control centre (brain). Brain sends output
(oxytocin) to effectors (muscles in uterine wall contract) causing a response (body
3
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