Nerve And Musccle

Question 1

Digestive System

Answer 1

Formed by alimentary canal (Gastrointestinal tube)

Suspended within the colon.

Question 2

Coelom

Answer 2

The body cavity. Subdivided into the thoracic cavity (upper) and the abdominal cavity (lower).

Question 3

Organ

Answer 3

An organ is a structure that is comprised of two or more tissues that act in such a way as to perform a specific function.

Question 4

Tissue

Answer 4

A group of cells that have similar structure and function together as a unit.

Question 5

Tissue types

Answer 5

Epithelial tissue
Nervous tissue
Connective tissue
Muscle tissue

Question 6

Epithelial tissues

Answer 6

The tissue that covers all body surfaces.

Simple or stratified (one layer vs two or more layers of cells)

Three kinds of shape:
Squamous (flat)
Cuboidal
Columnar

Question 7

Lumenal

Answer 7

Pertaining to the channel or cavity within a tube or tubular organ.

Question 8

Apical surface

Answer 8

The surface of the cells that faces the lumen.

Question 9

Connective Tissues

Answer 9

Structural
Blood Cells
Mast Cells
Adipose Cells
Melanocytes

Question 10

Fibroblasts

Answer 10

Cells that secrete structural proteins like collagen, reticulin, and elastin.

Question 11

Collagen

Answer 11

Triple stranded, insoluble fibrous protein.

Highly cross-linked which makes the finers strong and flexible. Most abundant protein in mammals.

Question 12

Reticulin

Answer 12

A mesh work of fibers that act as a supporting structure for soft tissues such as the liver, bone marrow, spleen and lymph nodes.
Not as highly could as collagen.

Question 13

Elastin

Answer 13

Highly crosslinked protein associated with organs that require elasticity. Examples: lungs, skin, and blood cells.

Question 14

Cartilage

Answer 14

Secreted by chondrocyte, a type of fibroblasts.
A connective tissue that is found on the body where there is a certain amount of stress placed on the body.
Examples: nose, articulating surfaces of bones, intervertebral discs and the external ear.

Question 15

Bone

Answer 15

A structural connective tissue that is organically comprised collagen and inorganically of calcium phosphate and calcium carbonate.
Secreted by osteoblasts, a type of fibroblast.
Central cavity has spongy marrow where red blood cells and white blood cells are formed.

Question 16

Mast cells

Answer 16

Connectice tissue found in the respiratory tract and gastrointestinal tract.
Releases histamines in response to allergic reaction, infection or histamines.
Histamines increase blood flow to the blood vessels of the affected region.

Question 17

Adipose cells

Answer 17

A connective tissue and cells that store fat.

Question 18

Melanocytes

Answer 18

A connective tissue and cells that store pigments.

Question 19

Muscle tissue

Answer 19

Comprised of skeletal muscle, smooth muscle and cardiac muscle.