When the impulse reaches the AV node, it is delayed for about
Anonymous Quiz
15%
0.5 second
4%
0.02 second
73%
0.2 second
8%
2.0 seconds
The aorta is the largest artery in the body with a diameter of about
Anonymous Quiz
48%
25 mm
22%
10 mm
22%
50 mm
9%
120 mm
👍1
Nearly ......... % of the blood leaving the heart flows to the kidneys
Anonymous Quiz
7%
10%
40%
70%
40%
25%
13%
30%
😢2
The cardiac muscle is an “all – or – nothing” muscle and it never gets tired
Anonymous Quiz
68%
T
32%
F
Myogenic means the heart can generate its own electrical rhythm without external nerves
Anonymous Quiz
74%
T
26%
F
❤1
The first heart sound (lub) is caused by the snapping shut of the semilunar valves
Anonymous Quiz
38%
T
63%
F
The normal heart rate is 60-80 beats per minute and is controlled by the autonomic nervous system
Anonymous Quiz
70%
T
30%
F
👍1
The septum is a vertical wall that prevents the mixing of oxygenated and deoxygenated blood
Anonymous Quiz
85%
T
15%
F
👍1
The heart is located in the center of the thorax, directly behind the
Anonymous Quiz
26%
Lungs
0%
Ribs
57%
Sternum
17%
Diaphragm
👍1
The heart is a single muscle, and its contraction spreads over the heart like a
Anonymous Quiz
19%
Pulse
71%
Wave
5%
Vibration
5%
Shock
The force that blood exerts on the walls of blood vessels is known as
Anonymous Quiz
13%
Heart rate
0%
Cardiac cycle
83%
Blood pressure
4%
Pulse
Nutrients from the small intestine are transported directly to the liver via:
Anonymous Quiz
16%
Hepatic artery
58%
Hepatic portal vein
16%
Hepatic vein
11%
Renal artery
👍1
The pericardium is a sac that secretes fluid to reduce friction during pumping
Anonymous Quiz
89%
T
11%
F
❤1
❤1
The systemic circulation starts at the left ventricle and ends at the right atrium
Anonymous Quiz
83%
T
17%
F
إعداد طب 2007
The systemic circulation starts at the left ventricle and ends at the right atrium
الدورة النظامية systematic تبدء من left ventericles وتمر على الجسم كله بعدها ترد لل right atruim ولكن
الدورة الرئوية العكس هي الي يكون فيها الدم غير مؤكسج موجود في right ventricles ويمشي لعند الرئة عشان يصير تبادل غازات ويرد لل left atruim
دورتين عكس بعضهن افهمهن 🔄🫀
الدورة الرئوية العكس هي الي يكون فيها الدم غير مؤكسج موجود في right ventricles ويمشي لعند الرئة عشان يصير تبادل غازات ويرد لل left atruim
دورتين عكس بعضهن افهمهن 🔄🫀
❤3👍1💯1
Which part of the systemic circulation supplies the heart itself with blood
Anonymous Quiz
61%
Coronary circulation
6%
Renal circulation
11%
Hepatic portal circulation
22%
Pulmonary circulation