Heartland A&P The Blood

This is an example of ........

• cell

• organ system

• organ

• tissue

Answer explanation

This is an example of an organ because it refers to a structure composed of different tissues working together to perform specific functions, distinguishing it from cells, tissues, and organ systems.

Tags

NGSS.HS-LS1-2

Which type of system circulates blood throughout the body?

• Digestive System

• Respiratory System

• Skeletal System

• Cardiovascular System

• Circulatory System

Answer explanation

The Cardiovascular System is responsible for circulating blood throughout the body, delivering oxygen and nutrients to cells while removing waste products.

The Circulatory system typically includes the lymphatic system as well.

The other systems listed do not perform this function.

Tags

NGSS.MS-LS1-3

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, leading to an increase in hematocrit (Hct). Therefore, the correct answer is '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 of 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.

Which antigens are present in blood type AB+?

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 red blood cells, as well as the Rh factor (antigen Rh). It does not have antigen O, as O is characterized by the absence 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 and return carbon dioxide to the lungs for exhalation. This is essential for cellular respiration and overall metabolism.

Which component of blood is responsible for clotting?

• Plasma

• Red blood cells

• White blood cells

• Platelets

Answer explanation

Platelets are the component of blood responsible for clotting. They aggregate at the site of a blood vessel injury, forming a plug to stop bleeding, unlike plasma, red blood cells, or white blood cells, which have different functions.

What is the liquid portion of blood called?

• Leukocytes

• Hemoglobin

• Plasma

• Serum

Answer explanation

The liquid portion of blood is called plasma. It carries cells, nutrients, hormones, and waste products. Leukocytes are white blood cells, hemoglobin is a protein in red blood cells, and serum is plasma without clotting factors.

What is the blood type based on the results shown?

• A-

• B+

• AB-

• AB+

• O-

Answer explanation

The blood type AB- indicates the presence of 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

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