Mammalian Circulatory System

What are the three primary components of the closed circulatory system?

• Fluid that transports materials

• A system of blood vessels

• A heart that pumps fluid through the vessels

• Blood that carries oxygen using hemoglobin

• An open body cavity (hemocoel) that contains fluid

Match the circulatory system features to the correct category.

Groups:

(a) Open System

,

(b) Closed System

• Fluid is pumped throughout the body cavity.

• Tubular heart

• Fluid transport is slow

• Chambered heart

• Flow of fluid is rapid

• Only nutrients are exchanged between fluid and tissues

• Gases are not transporeted

• Hemolymph

• Fluid does not come into direct contact with organ tissue

• Fluid is pumped through blood vessels

• Fluid transports nutrients and gases

Red blood cells are also known as:

• Erythrocytes

• Leukocytes

• Platelets

• Plasma

White blood cells are also known as:

• Erythrocytes

• Leukocytes

• Platelets

• Plasma

What is the structure of hemoglobin?

• a protein complex made of two proteins and copper-rich heme groups

• a protein complex made of two proteins and iron-rich heme groups

• a protein complex made of four proteins and copper-rich heme groups

• a protein complex made of four proteins and iron-rich heme groups

How many oxygen molecules can red blood cells carry?

• 4

• 1

• 2

• 8

In adults, red blood cells are produced in the ___________ ___________ _________.

Which of the following is the primary component of erythrocytes?

• hemoglobin

• thrombin

• plasma

• erythroprotein

What is the function of leukocytes?

• fight disease and protein the body from infection

• responsible for blood clotting

• remove waste from the body

• carry oxygen, nutrients, and waste products

Place the steps of blood clotting in the correct order.

• Fibrin binds the clot

• Thrombin converts the protein fibrinogen into sticky fibrin

• Platelets aggregate at the site of a wound

• Chemicals stimulate thrombin production

• Broken cells and platelets release chemicals