Tissue module 4

Question 1

Types of tissue

Answer 1

Nervous
muscle
Epithelial
Connective

Question 2

Nervous

Answer 2

Internal communication being brain, spinal cord and nerves.

Question 3

Muscle

Answer 3

contracts to cause movement, muscles attached to bones, muscles of heart, muscles of walls of hollow organs.

Question 4

Epithelial

Answer 4

forms boundaries between different enviroments, protect, secretes, absorbs, filters. Lining of GI tract organs and other hollow organs, skin surface.

Question 5

Connective

Answer 5

supports, protectx, binds other tissues together

Question 6

Types of epithelium

Answer 6

Squmous 
Cuboidal 
Columnar 
Transitional epithelium 
Pseudostratified epithelium

Question 7

Endocrine glands

Answer 7

secrete hormones into the bloodstream.

Question 8

exocrine glands

Answer 8

Secrete their substance to the external enviroment.

Question 9

Merocrine glands

Answer 9

Secrete substances via exocytosis

Question 10

Holocrine glands

Answer 10

Sebaceous (oil) glands

Secret substance via rupture of secretory cells

Question 11

Two elements of connective tissue

Answer 11

Cells 
Extracellular matrix (ECM)

Question 12

ground substance

Answer 12

Unstructured material composed of the extracellular fluid which contains proteins, proteoglycans.

Question 13

Fibers

Answer 13

Protein strand suspended within the ground substance that provides support. There are three types of fibers in connective tissue:

Question 14

Collagen fibers

Answer 14

Extremely tough fibers providing tensile strength

Question 15

Elastic fibers

Answer 15

rubber like fibers allowing stretch and recoil

Question 16

Recticular fibers

Answer 16

delicate fibers that create a web like network to support cells smaller blood vessels or nerves.

Question 17

four types of connective tissue

Answer 17

Connective tissue proper
Fluid connective tissue (blood/toto and lymph)
Cartilage
Bone

Question 18

three types of loose connective tissue

Answer 18

Areolar
Adipose
Reticular

Question 19

Areolar

Answer 19

Widely distributed, supports epithelium, including glands, surrounds small blood vessels and nerves and forms a part of the subcutaneous tissue.

Question 20

Adipose

Answer 20

Composed of adipose cells in little extracellular matrix. Provide insulation around the kidneys, eyeballs, heart, abdomen and hips.

Question 21

Reticular

Answer 21

Contains network of reticular fibers which support macrophages and fibroblasts. Found in liver, kidney, lymph nodes, spleen and bone marrow.

Question 22

Types of dense connective tissue

Answer 22

Regular
Irregular
Elastic

Question 23

Regular

Answer 23

Close packed bundles of collagen fibers arranged parallel to each other. Provides great resistance to unidirectional tension found in tendons, ligaments and fascia.

Question 24

Irregular

Answer 24

bundles of collagen in an irregular arrangement. Provides resistance to tension forces from all directions found in the dermis of the skin.

Question 25

Elastic

Answer 25

Contains vast amounts of elastic fibers which allow stretch and recoil. Found in a few ligaments, large blood vessels and bronchi.

Question 26

3 types of membrane

Answer 26

Cutaneous Serous Mucous

Question 27

Types of white blood cells

Answer 27

``` Neutrophils Eosinophils T lymphocytes Basophils B lymphocytes Monocytes ```

Question 28

Neutrophils

Answer 28

Phagocytize (digest and destroy) bacteria, some fungi and viruses

Question 29

Eosinophils

Answer 29

attack parasitic worms and involve allergic and asthmatic reactions

Question 30

T lymphocytes

Answer 30

attack and destroy viral infected body cells and tumor cells

Question 31

Basophils

Answer 31

stimulate vasodilation and attract other WBCs to areas of infection and inflammation.

Question 32

B lymphocytes

Answer 32

Produce antibodies which identify and mark foreign antigens for destruction

Question 33

Monocytes

Answer 33

Phagocytize infectious microbes, foreign antigens, cellular debris and dead cells.

Question 34

Pacemaker cells

Answer 34

pacemaker cells are muscle cells that can self-stimulate; that is, they can initiate their own electrical signal to pass to neighboring cells causing contraction