Hey if you know this , it doesn't have lines indicating to where so i'm confused, also need with number 7

6.

The attached image contains the correct labels.

7.

a. 1

b. 6

c. 3

d. 10

e. 8

f. 4

g. 2

h. 7

i. 9

j. 5

Explanation:

7.

The entire cardiac cycle is as follows:

Deoxygenated blood enters the right ventricle from the superior and inferior vena cava.The right atrium pumps the deoxygenated blood to the right ventricle.From the right ventricle, the deoxygenated blood moves to the lungs via the pulmonary artery.After gaseous exchange, the oxygenated blood returns to the heart into the left atrium via the pulmonary vein.From the left atrium, blood moves to the left ventricle.Oxygenated blood is pumped by the left ventricle into the aorta which supplies blood to all parts of the body.Deoxygenated blood, collected from the body again enters into the right atrium via the vana cava.

The speed of  sound:   sound travels  at different speeds depending on what it istraveling through. of the three mediums (gas, liquid, and solid)  sound waves travel the slowest through  gases, faster  through  liquids, and fastest  through  solids.