Pectinate muscles are parallel ridges in the walls of the atria of the heart. The name is due to their resemblance to the teeth of a comb (pecten). The heart is the organ pumps blood to all parts of the body. It is made up of four chambers, that is, right and left ventricles, left and right atria, and the blood vessels, Pulmonary artery, pulmonary vein, aorta, and venacava. An auricles are pouch like structure that increase the total filling capacity of the atrium and also increase the volume of blood that an atrium is able to contain.
Photosynthesis is the opposite of cellular respiration.
glucose is converted into ATP during cellular respiration.
Light energy + Oxygen = Glucose
We breathout CO2 during the process of cellular respiration.
PLEASE ASK IF YOU HAVE ANY QUESTIONS :)
Answer:
d
Explanation:
Your heart is an organ that’s largely made up of muscle. It has the vital function of working to pump blood to the organs and tissues of your body.