Anatomy 1 Blood LU 3

What are the two portions to blood?

• serum and plasma

• serum and formed elements

• heme and globin

• plasma and formed elements

Answer explanation

Blood consists of two main components: plasma, the liquid part, and formed elements, which include red blood cells, white blood cells, and platelets. Therefore, the correct answer is plasma and formed elements.

Eosinophils are also known as

• basophils

• neutrophils

• acidophils

• monocytes

• lymphocytes

Answer explanation

Eosinophils are also known as acidophils due to their affinity for acidic dyes. This term highlights their staining characteristics, distinguishing them from other white blood cells like basophils and neutrophils.

Tags

NGSS.MS-LS1-3

The protein portion of a red blood cell is (a)   and the non-protein portion is ​ (b)  

• globin

• heme

• plasma

• serum

• prothrombin

Answer explanation

The protein portion of a red blood cell is globin, which forms the structure of hemoglobin. The non-protein portion is heme, the molecule that binds oxygen. Together, they enable red blood cells to transport oxygen in the body.

What are the most numerous of the white blood cells?

• neutrophils

• erythrocytes

• acidophils

• basophils

• eosinophils

Answer explanation

Neutrophils are the most numerous type of white blood cells, making up about 50-70% of the total white blood cell count. They play a crucial role in the immune response by fighting off infections.

Organize these options into the right categories

Groups:

(a) Erythocyte

,

(b) Leucocyte

,

(c) thrombocyte

• have a nucleus but lacks hemoglobin

• play a key role in blood clotting

• help form clots

• have a nucleus and contains hemoglobin

• white blood cells

• most abundant type of blood cell

• carry oxygen to the body's tissues

• fight against infection.

• also known as platelets

• lack nucleus

• can be classified into granulocytes and agranulocytes

• red blood cells

• contain heme and globin

Tags

NGSS.MS-LS1-1

NGSS.MS-LS1-2

NGSS.MS-LS1-3

Viscosity is resistance to flow of a liquid. 

• True

• false

Answer explanation

True. Viscosity is indeed defined as the resistance of a liquid to flow. Higher viscosity means a liquid flows less easily, while lower viscosity indicates it flows more freely.

What is the ability of a white blood cell to move through an unbroken capillary wall referred to as?

• phagocytosis

• osmosis

•  diapedesis

• leucocytosis

Answer explanation

The ability of a white blood cell to move through an unbroken capillary wall is called diapedesis. This process allows leukocytes to exit the bloodstream and reach sites of infection or inflammation.

What are the smallest of the formed elements?

• red blood cells

• white blood cells

• thrombocytes

Answer explanation

Thrombocytes, or platelets, are the smallest of the formed elements in blood, measuring about 2-4 micrometers in diameter, compared to red and white blood cells, which are larger.

What is plasma minus clotting proteins called?

• serum

• plasma

• proteins

• heme

• globin

Answer explanation

Plasma is the liquid component of blood, and when clotting proteins are removed, the remaining fluid is called serum. Therefore, the correct answer is serum.

The pH level of blood is

• 7.0 to 7.30

• 7.25- 7.35

• 7.35 to 7.45

• 7.45- 7.55

Answer explanation

The normal pH level of blood ranges from 7.35 to 7.45, which is crucial for proper physiological functions. Values outside this range can indicate acidosis or alkalosis, making 7.35 to 7.45 the correct choice.

Tags

NGSS.HS-LS1-3