What does the tricuspid valve do?

• Prevent backflow from the RA to RV
• Prevent backflow from the RV to RA
• Prevent backflow from the LV to LA
• Prevent backflow from the LA to LV

Which heart structure carries deoxygenated blood to the lungs?

• Pulmonary artery
• Pulmonary vein
• Aorta
• Superior vena cava

Which heart structure carries deoxygenated blood from the lower body to the RA?

• Aorta
• Pulmonary vein
• Superior vena cava
• Inferior vena cava

Which blood vessel has thick walls to carry blood under high pressure to the body?

• artery
• vein
• capillary
• all of the above

What is the ideal blood pressure?

• 20/100
• 180/20
• 120/80
• 20/80

Which number represents the pressure of blood in the arteries as ventricles relax?

• total blood pressure
• systolic
• diastolic
• histolic

Which molecule takes cholesterol to the cells?

• LDL
• HDL

Which molecule removes excess cholesterol and transports it to the liver?

• LDL
• HDL

Which of these is NOT part of the immune system's innate defenses?

• skin

• B cells

• nose hair

• mucus

What is the primary factor that determines the three-dimensional shape of a protein?

• The structure of peptide bonds
  
• The sequence of peptide bonds
  
• The sequence of amino acids
  
• The structure of the amino acids
  
  

Tags

NGSS.HS-LS1-1