Exam 3 A&P Review

What is the primary function of blood in the human body?

• To provide structural support to the body

• To regulate body temperature

• To transport nutrients, gases, and wastes

• To produce hormones

What does hematocrit measure in the blood?

• The total volume of plasma

• The percentage of blood volume that is occupied by red blood cells

• The concentration of white blood cells

• The amount of hemoglobin in the blood

Which of the following is NOT a component of plasma?

• Water

• Hormones

• Red blood cells

• Proteins

The buffy coat in a centrifuged blood sample contains:

• Only red blood cells

• Only plasma

• White blood cells and platelets

• Proteins and hormones

Why are universal precautions important in healthcare settings?

• To ensure patient confidentiality

• To prevent the spread of infection

• To reduce healthcare costs

• To speed up patient recovery

What percentage of blood volume is typically plasma?

• 10%

• 25%

• 55%

• 75%

Which of the following is a function of blood related to protection?

• Transporting hormones

• Regulating body temperature

• Clotting to prevent blood loss

• Carrying oxygen from the lungs to the body's tissues

Which of the following best describes the role of the buffy coat in the immune response?

• It supplies nutrients to immune cells.

• It acts as a physical barrier to infection.

• It contains cells that are part of the body's immune system.

• It produces antibodies.

What is the significance of measuring hematocrit levels in patients?

• To determine the patient's blood type

• To assess the patient's nutritional status

• To diagnose and monitor conditions affecting red blood cell volume

• To measure the patient's immune response

How do universal precautions help in preventing the transmission of bloodborne pathogens?

• By treating all human blood and certain body fluids as if they were known to be infectious

• By using antibiotics as a preventive measure

• By vaccinating healthcare workers against all possible pathogens

• By isolating patients with known infections