Bio 253 Exam #3 Practice
Questions and Answers Verified by Experts
Which of the following statements about tetanus is true? it is a contraction of maximum
strength, all fibers in a muscle are recruited during tetanus, a maximum number of cross bridge
sites are uncovered
during smooth muscle contraction, Ca++ activates? calmodulin
single-unit smooth muscle fibers are electrically linked by ______. gap junctions
What type of muscle is (are) controlled by the autonomic nervous system single-unit,
multi-unit, cardiac
blood in the venae cavae flows into the _____. right atrium
a rapid repolarization of the membrane caused by K+ leaving the cell occurs in ? neurons,
in contractile cardiac cells, and autorhythmic cardiac cells
, Bio 253 Exam #3 Practice
Questions and Answers Verified by Experts
depolarization of the membrane caused by Na+ entering the cell when threshold is reached
occurs in neurons, in contractile cardiac cells
during the ST segment ventricular pressure is ______ pressure in the arteries and atrial pressure
is _______ ventricular pressure, so blood flows _________. Higher than, less than, into
arteries from ventricles
stroke volume is equal to end diastolic volume - end systolic volume
diffusion in the capillaries is facilitated by thin capillary walls
what percent of blood plasma volume passes through your lymph system each day? about
100%
which blood vessel experiences the highest pressure? what experiences the lowest pressure?
arteries, veins
Questions and Answers Verified by Experts
Which of the following statements about tetanus is true? it is a contraction of maximum
strength, all fibers in a muscle are recruited during tetanus, a maximum number of cross bridge
sites are uncovered
during smooth muscle contraction, Ca++ activates? calmodulin
single-unit smooth muscle fibers are electrically linked by ______. gap junctions
What type of muscle is (are) controlled by the autonomic nervous system single-unit,
multi-unit, cardiac
blood in the venae cavae flows into the _____. right atrium
a rapid repolarization of the membrane caused by K+ leaving the cell occurs in ? neurons,
in contractile cardiac cells, and autorhythmic cardiac cells
, Bio 253 Exam #3 Practice
Questions and Answers Verified by Experts
depolarization of the membrane caused by Na+ entering the cell when threshold is reached
occurs in neurons, in contractile cardiac cells
during the ST segment ventricular pressure is ______ pressure in the arteries and atrial pressure
is _______ ventricular pressure, so blood flows _________. Higher than, less than, into
arteries from ventricles
stroke volume is equal to end diastolic volume - end systolic volume
diffusion in the capillaries is facilitated by thin capillary walls
what percent of blood plasma volume passes through your lymph system each day? about
100%
which blood vessel experiences the highest pressure? what experiences the lowest pressure?
arteries, veins
