1. Cerebellar output arises within the: cortex deep nuclei peduncles 2. The cere

Question

1. Cerebellar output arises within the:

cortex

deep nuclei

peduncles

2. The cerebello-thalamic tracts pass through a pair of peduncles. Which pair?

superior

middle

inferior

3. Do the cerebello-thalamic tracts decussate?

yes

no

4. Total blood volume can be predicted from body mass with an allometric equation. This volume can be subdivided into the central and systemic circulation. The central circulation pertains to blood passing through the:

CNS

heart and lungs

visceral organs

5. Approximately 80% of blood within the systemic circulation is found within:

arteries

capillaries

veins

6. The term circulation time denotes the average time required for an erythrocyte to enter the arterial bloodstream, pass through a capillary bed, return to the heart, pass through a pulmonary capillary bed and enter the left ventricle. Circulation time, t, can be predicted by an allometric equation and is measured on a scale of:

seconds

minutes

hours

7. The heart is a circulating pump with 4 chambers. A single heartbeat represents the staggered contraction of atria and ventricles. Heart valves prevent retrograde flow. The timing of ventricular contraction and relaxation is controlled by:

the pacemaker potential

an action potential that passes from Purkinje fibers and spreads upward through the myocardium

autonomic innervation

Explanation / Answer

1. Cerebellar output arises within the: Cortex.

2.The cerebello-thalamic tracts pass through a pair of peduncles:superior

3. Do the cerebello-thalamic tracts decussate? YES

4.The central circulation pertains to blood passing through the:heart and lungs

5. Approximately 80% of blood within the systemic circulation is found within:veins

For this reason, veins are referred to as capacitance vessels. The relative volume of blood between the arterial and venous sides of the circulation can vary considerably depending upon totalblood volume, intravascular pressures, and vascular compliance.

6.allometric equation and is measured on a scale of:seconds

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