Exam 23: Circulation

Unlike other blood cells,certain types of _________________ are not confined to the bloodstream,but instead can squeeze through the walls of capillaries to get to where they are needed.

Fibrinogen's main function is as an osmotic counterforce.

Platelets are important in:

Blood plasma is 90% water.

Explain the protective functions of the vertebrate circulatory system.

The fraction of the total volume of the blood that is occupied by red blood cells is called the blood's hematocrit.

Blood plasma contains all of the following EXCEPT:

Which type of blood cell mainly defends against parasites?

Exchange of nutrients and gases between tissue cells and the blood takes place through the walls of:

In a ___________ circulatory system,blood is pumped by a heart through blood vessels.

Angina pectoris is:

The sinoatrial node controls the heart beat.

The heart valve guarding the entrance to the aorta is the _________ valve.

How does the structure of lymphatic capillaries differ from that of capillaries of the circulatory system?

Megakaryocytes:

The veins leading from the lungs to the heart are the ____________ veins.

Which of these is not a characteristic of an open circulatory system?

Once inside the lymphatic system,tissue fluid is called ______________.

Which is incorrect about the fish heart?

________________ is caused by an interference with the blood supply to the brain.