System Part 1 Question and answers
already passed
THE CARDIOVASCULAR SYSTEM - correct answer ✔
The cardiovascular system is responsible for:
• Delivering _________ and nutrients to all body cells
• Removing waste products for ____________ - correct answer ✔- oxygen
- excretion
ANATOMY OF THE HEART - correct answer ✔
What are the 3 layers of the heart?
- outer?
- thick, muscular?
- inner? - correct answer ✔1. Pericardium (outer)
2. Myocardium (thick, muscular)
3. Endocardium (inner)
What are the 4 chambers of the heart? RLRL - correct answer ✔1) Right
atrium
2) Left atrium
3) Right ventricle
,4) Left Ventricle
What are the 4 valves of the heart? PAMT
- 2 Semilunar valves ....
- 2 Atrioventricular valves .... - correct answer ✔• 2 Semilunar valves
(1. Pulmonic and 2. Aortic)
• 2 Atrioventricular valves
(3. Mitral and 4. Tricuspid)
CIRCULATION OF THE HEART - correct answer ✔
Which side of the heart receives DEOXYGENATED blood and directs blood
into the lungs through the PULMONARY artery? - correct answer ✔RIGHT
side
The LEFT side receives _______________ BLOOD and directs blood to the
________. - correct answer ✔OXYGENATED, aorta
Which side receives deoxygenated blood from everywhere in the body
through the VEINS? - correct answer ✔RIGHT side
The _________ delivers blood into systemic circulation by way of ARTERIES.
- correct answer ✔aorta
CARDIAC CYCLE - correct answer ✔
, Diastole vs Systole?
______________ = relaxation
______________ = contraction
______________ is when blood returns to the heart - correct answer
✔Diastole: relaxation
• Blood returns to the heart
Systole: contraction
CARDIAC CONDUCTION - correct answer ✔
- _______ node contains PACEMAKER cells
- _______node SLOWS impulse
- _________ of _____ carries impulse into ventricles
• Bundle branches
• Purkinje fibers - correct answer ✔- SA
- AV
- Bundle of His
DEFINE:
The cells within the heart's electrical system can generate action potentials or
electrical impulses without being excited by external stimuli. - correct answer
✔Automaticity
DEFINE: