Volume 1: Unit 3

Question 1

The purpose of the plasma membrane is to ______

Answer 1

Separate and protect a cell from its surrounding environment

Question 1

The part of the cell which houses the functions for cell expansion, growth, and replication to be carried out is known as the _______

Answer 1

Cytoplasm

Question 1

The types of cells that are most affected by exposure to ionizing radiation are those that _________

Answer 1

Reproduce rapidly

Question 1

Which type of tissue is tightly packed together and serves as an interface tissue?

Answer 1

Epithelial

Question 1

Which type of tissue is highly cellular and well supplied with blood vessels?

Answer 1

Nervous

Question 1

Considered the innermost layer of the eye, the membrane upon which images are received is known as the _____

Answer 1

Retina

Question 1

What tissue type is responsible for coordinating and controlling many body activites?

Answer 1

Nervous

Question 1

Ultraviolet radiation can create a photochemical reaction in the very outside layer of the eye, killing cells there. What is the probable potential effect of the overexposure?

Answer 1

Sunburned Eyeballs

Question 1

The Eustachian tube is critical to the functioning of the ear because it _____

Answer 1

Provides a means of equalizing pressure

Question 2

The organ of Corti is critical to the functioning of the ear because it ______

Answer 2

Serves as a receptor for hearing

Question 3

Nearly every known variety of germs are prevented from passing through the skin’s surface due to the ______

Answer 3

Overlapping arrangement of epidermal cells

Question 4

The main function of the bones within the human body is what?

Answer 4

Provide a framework that supports and protects soft organs of the body

Question 5

When the Skin gets cold heat is conserved when the body does what?

Answer 5

Constricts capillaries to reduce the amount of blood at the skin’s surface

Question 6

What is the function of the red marrow of the bones?

Answer 6

Form red and white blood cells and blood platelets

Question 7

The most radiation-sensitive cells in the body are in bone marrow: as a result, when they are exposed to intense radiation, ________

Answer 7

normal replacement of circulating blood cells is impaired

Question 7

The muscular system is comprised of specialized cells called muscle fibers with the chief function of _____

Answer 7

contractibility

Question 8

Define how smooth muscles function

Answer 8

By contracting slowly and rhythmically

Question 8

What two major body systems work together to allow the body to regulate and maintain homeostasis?

Answer 8

Nervous and endocrine

Question 8

While central systems stimulants excite acetylcholine production, cholinesterase appropriately neutralizes this effect; however, a nerve agent stimulant that inhabits cholinesterase is known as ______

Answer 8

organophosphate

Question 8

What is the main function of the central nervous system?

Answer 8

Serves as the major signal receptor and integration site

Question 9

What two major body systems work together in the regulation of body activities?

Answer 9

Endocrine and Nervous

Question 9

Within the nervous system, highly specialized nerve cells that function by conducting nerve impulses are known as what?

Answer 9

Neurons

Question 9

What is considered the master gland because of the effect it has on other glands?

Answer 9

Pituitary

Question 10

The alpha cells in the pancreatic islets secrete the hormone glucagon in response to a ____

Answer 10

Low concentration if glucose in the blood

Question 10

What is the primary function of capillaries within the cardiovascular system?

Answer 10

Facilitate the exchange of materials between the blood and tissue cells

Question 11

If the heart is the organ that keeps the blood moving through the vessels, what is the transport medium?

Answer 11

Blood

Question 12

Because the walls of veins are thinner and less rigid than artieries, veins can ____

Answer 12

Hold more blood

Question 13

When fluid is prevented from returning to the capillaries and accumulates in tissue spaces, what is the result?

Answer 13

Edema

Question 14

What is the primary function of mature lymphocytes within the lymphatic system?

Answer 14

Defense against disease

Question 14

What two systems work together to supply oxygen and remove waste products from the body?

Answer 14

Circulatory and respiratory

Question 15

What body system is considered the major entry mode for toxic substances?

Answer 15

Respiratory

Question 15

What condition best illustrate an exaggerated immune response?

Answer 15

Hypersensitivity

Question 16

Within the digestive system food is broken down until the molecules are small enough to be absorbed and waste products are ________

Answer 16

Eliminated

Question 17

If the toxic substances such as heavy metals or halogenated hydrocarbons are not filtered out of the body and become concentrated, damage can be caused to the _____

Answer 17

Kidneys

Question 18

What is one of the major functions of the urinary system?

Answer 18

Maintain normal potential of pH levels within the blood

Question 19

What is the possible effect on the reproductive systems if there is an overexposure to ionizing radiation?

Answer 19

Genetic Mutations