SOPHIA HUMAN BIOLOGY

SOPHIA HUMAN BIOLOGY [Document title]


1 — Cardiovascular System
Understand the system of blood vessels.

What vessels carry blood away from the heart?
 a.) Veins
 b.) Atria
 c.) Arteries
 d.) Venules

2 — Heart and Blood Flow
Identify the major structures of the heart and the specific role in the overall functioning of the
heart.

Which of the following describes the atrium?
 a.) The thick wall that divides the heart in half
 b.) The upper chamber of each half of the heart
 c.) The lower chamber of each half of the heart
 d.) The valve that separates the upper and lower chambers of the right half of the heart

3 — Cardiac Cycle and Cardiac Conduction System
Determine the components of the cardiac cycle.

What is the role of the SA node in the heart?
 a.) It causes the chambers of the heart to relax after a contraction.
 b.) It produces two electric signals: First for the atria to contract and second for the ventricles
to contract.
 c.) It slows down the electric signal to the ventricles so they beat after the atria.
 d.) It originates the electric signal that causes the heart to beat.

4 — Blood Pressure
Understand how blood pressure is measured and regulated, as well as common disorders.

What kind of blood pressure exists during a contraction of the ventricle?
 a.) Hypertension
 b.) Systolic
 c.) Diastolic
 d.) Hypotension