Home
Dashboard
Leaderboard
Profile
Live Tests
Log Out
Body Fluids and Circulation
Home
>
Zoology
(37)
>
Body Fluids and Circulation
(2)
Topic Section:
All (2)
Circulatory Pathways (0)
Human Heart: Double Circulation (1)
Human Heart: Cardiac Cycle (1)
Rhythmic Excitation of Human Heart: Part 1 (0)
Rhythmic Excitation of Human Heart: Part 2 (0)
ECG & Coronary Artery Disease (0)
Atherosclerosis, Hypertension & Ventricular Fibrillation (0)
Blood: White Blood Cells (0)
Lymph (0)
Blood: Blood Group (A,B,O) (0)
Regulation of Cardiac Activity (0)
Blood: Blood Group (0)
Blood: General Description & RBC (0)
Blood: Blood Clotting (0)
DISORDERS OF CIRCULATORY SYSTEM (0)
Human Heart: Gross Anatomy (0)
Q1. Which layer of blood vessels is comparatively thin in veins but thick in arteries?
Tunica externa
Tunica media
Tunica intima
Endothelium
Explanation:
Your browser does not support the audio element.
Q2. What causes the first heart sound (lub) during a heartbeat?
Closure of the semilunar valves at the start of ventricular diastole
Opening of the semilunar valves to allow blood flow to the arteries
Rapid filling of the ventricles from the atria
Closure of the tricuspid and bicuspid valves during ventricular systole
Explanation:
Your browser does not support the audio element.
