Circulatory and Respiratory

Choose the function that does NOT characterize the vertebrate circulatory system.

• elimination
• transportation
• protection
• regulation

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

• Blood is enclosed within blood vessels
• There is no distinction between blood and extracellular fluid
• Contains hemolymph
• There is no distinction between blood and extracellular fluid

How do veins prevent the back-flow of blood within them?

• They possess flaplike valve
• They are capable of contracting
• Because of the tiny lumen inside them
• By having thick, muscular walls

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

• capillaries
• arterioles
• veins
• venules

Tags

NGSS.HS-LS2-3

___ are the blood cells that carry oxygen throughout the body.

• Erythrocytes
• Leukocytes
• Thrombocytes
• Platelets

Blood plasma contains all of the following EXCEPT ___

• hemoglobin
• metabolites and wastes
• salts and ions
• proteins

The average lifespan of a red blood cell is approximately ___.

• Four months
• 15 days
• one month
• three months

After blood flows through the right ventricle of the human heart, its next major destination is to ___.

• the lungs.
• the arms.
• the systemic system
• the left ventricle

Which animal has countercurrent heat exchange to retain heat in a cold environment?

• Whale
• Birds 
• Foxes
• Bony Fish

Tags

NGSS.HS-LS4-4

Platelets are important in ___

• blood clotting
• All of the choices are correct.
• fighting infection.
• inflammation