00:01
Number 11, so at any given time, where is most of the blood in your body? that's going to be in the veins as that blood is returning, making its way back up to the heart.
00:20
And the next question is about a condition where organs are mirror images of each other, cetus and verses.
00:29
So in the normal body, the apex of the heart points down.
00:36
And towards the left.
00:38
But in the cetus and versus heart, that is going to point, the apex of the heart is going to point towards the right.
00:54
Following kind of right along with this orientation of the heart.
00:59
So in a normal heart, you've got four chambers.
01:03
The upper chamber are called the atria.
01:07
And the lower chambers are called the ventricles.
01:12
So for number 13, the upper chambers are the atria.
01:27
The next question is asking about the types of cellular structures that hold muscle cells together.
01:36
So in a muscle cell, a muscle cell is kind of this branched cell, and these finger -like branches are attached to other cells.
01:49
And this attachment point is called an intercalated disc.
01:56
Disc.
02:01
And this helps transmit the impulse from one muscle cell to the next so that your heart actually can beat in sync in unison.
02:14
So question number 15 is asking about the relationships between different parts of the heart.
02:23
So in the heart, as blood moves through the heart, it goes from the right ventricle to the pulmonary trunk...