Biology 1120



Biology 1120

Quiz 5

Name___________________________________________________________________

Total marks: 23 Total pages 3

(1) 1. Which term is not used to describe one of the components of the matrix?

A) interstitial fluid

B) tissue fluid

C) ground substance

D) extracellular fluid

E) basement membrane

(1) 2. Which of the following is one of the primary germ layers?

A) acinar

B) transitional

C) glial

D) mesoderm

E) adipose

(1) 3. Where would you find nonkeratinized stratified squamous epithelium.

A) the skin

B) the heart

C) surrounding bones

D) the tongue

E) surrounding neurons

(1) 4. Which of the following are fibers found in fibrous connective tissue

A) elastic fibers

B) microfilaments

C) surrounding bones

D) tubulin

E) actin

(1) 5 What feature of cardiac muscle cells allows transmission of electrical signals between cells?

A) striations

B) tight junctions

C) synovial membranes

D) the axon

E) intercalated discs

(2) 6. Define the term matrix as it applies to tissues.

The matrix is the extracellular material that surrounds a cell. The relative amount of volume taken up by the matrix compared to the volume taken up by the cells themselves varies from one tissue type to another.

(2) 7. What are the two components of the matrix?

1. fibrous proteins

2. clear gel (ground substance)

(4) 8. Name the four primary tissue classes.

epithelial, connective, nervous, muscular

(2) 9. Give the general description of epithelial tissue

Consists of a flat sheet of closely adhering cells, one or more cells thick, with the upper surface exposed to the environment or an internal space of the body.

Epithelium covers the body surface, lines body cavities, forms the internal and external linings of many organs, and constitutes most gland tissue.

Very thin extracellular material: no room for blood vessels.

(5) 10. Name five functions of connective tissue.

1 1. Binding of organs

Binding of muscle to bone via tendon. Holds kidneys and eyes in place. Fibrous tissue binds the skin to underlying muscle.

2 Support

Bones support the body. Cartilage supports ears, nose, trachea and bronchi.

3 Physical protection

Cranium, ribs and sternum protect the brain, lungs and heart. Fat around the kidneys and eyes protect them.

4 Immune protection

Connective tissue cells attack microorganisms.

5 Movement

Bones provide the levers for body movement. Cartilage on bone surfaces cushion joint movements.

6 Storage

Fat is the body's major energy reserve. Bone is a reservoir of calcium and phosphorous.

7 Heat production

Brown fat generates heat in infants and children.

8 Transport

(1) 11. Identify one location of reticular tissue.

A mesh of reticular fibers and fibroblasts. Forms the structural framework (stroma) for lymph nodes, spleen, thymus, and bone marrow.

(2) 12. What is the primary common feature of muscle and nervous tissue? Excitability refers to the electrical activity of all cells. Nervous tissue and muscle tissue have developed this property to its fullest dimension so excitable tissues usually refers to nervous and muscle tissue.

................
................

In order to avoid copyright disputes, this page is only a partial summary.

Google Online Preview   Download