Heartland A&P The Blood

Blood type A+

will agglutinate with ____________.

Select all that apply.

• anti A antibody

• anti B antibody

• anti O antibody

• anti Rh antibody

Answer explanation

Blood type A+ has A antigens and Rh factor. It will agglutinate with anti A antibodies (which target A antigens) and anti Rh antibodies (which target the Rh factor). Anti B and anti O antibodies do not apply.

When you are at high altitude,

your hematocrit (Hct) will _______.

• increase

• the same

• decrease

• don't know

Answer explanation

At high altitude, the body compensates for lower oxygen levels by producing more red blood cells, which increases hematocrit (Hct). Therefore, your hematocrit will increase.

Tags

NGSS.HS-LS1-3

The first step of hemostasis is _____________.

• forming blood clots

• agglutination

• vascular spasm

• producing fibrin

Answer explanation

The first step of hemostasis is vascular spasm, which involves the constriction of blood vessels to reduce blood flow and minimize blood loss. This is a crucial initial response before clot formation occurs.

Bacterial infection in the blood is called _______.

• Anemia

• Leukemia

• Septicemia

• Thrombocytopenia

Answer explanation

Bacterial infection in the blood is known as septicemia. It occurs when bacteria enter the bloodstream, leading to serious health complications. Anemia, leukemia, and thrombocytopenia refer to different blood conditions.

What antigens does the blood type AB+ have?

Select all that apply.

• antigen A

• antigen B

• antigen O

• antigen Rh

Answer explanation

Blood type AB+ has both antigen A and antigen B on the surface of its red blood cells, as well as the Rh factor (antigen Rh). It does not have antigen O, as O is not a specific antigen but rather a lack of A and B antigens.

What is the primary function of red blood cells?

• Transport oxygen

• Regulate temperature

• Fight infections

• Clot blood

Answer explanation

The primary function of red blood cells is to transport oxygen from the lungs to the body's tissues. They contain hemoglobin, which binds to oxygen, making this process efficient and essential for cellular respiration.

Which component of blood is responsible for clotting?

• Plasma

• Red blood cells

• White blood cells

• Platelets

Answer explanation

Platelets are the blood components responsible for clotting. They aggregate at injury sites and release chemicals that promote the formation of a clot, preventing excessive bleeding.

What is the liquid portion of blood called?

• Leukocytes

• Hemoglobin

• Plasma

• Serum

Answer explanation

The liquid portion of blood is called plasma. It carries nutrients, hormones, and waste products. Leukocytes are white blood cells, hemoglobin is a protein in red blood cells, and serum is the fluid that remains after blood clots.

What is the blood type based on the results?

• A-

• B+

• AB-

• AB+

• O-

Answer explanation

The blood type AB- indicates the presence of both A and B antigens on red blood cells, but lacks the Rh factor. This matches the correct answer, AB-, as it is the only option that fits these criteria.

Tags

NGSS.MS-LS3-1

NGSS.MS-LS4-4

For the RBC homeostasis, the organ __________ functions as the sensor and the control center.

Answer explanation

The kidney functions as the sensor and control center for red blood cell (RBC) homeostasis by detecting oxygen levels and regulating erythropoietin production, which stimulates RBC production in the bone marrow.

Tags

NGSS.HS-LS1-3