Chapter 5 Flashcards
1
Q
Cells are organized into _
A
Tissues
2
Q
Define tissue
A
Groups of similar cells with a common function
3
Q
Name the 4 major types of tissues
A
Epithelial
Connective
Muscle
Nervous
4
Q
Name the three types of intercellular junctions
A
Tight Junction
Desmosomes
Gap
5
Q
Explain tight junctions (intercellular junction)
A
- Membrane between cells mere and fuse together
- Blood brain barrier
- Forms linings and sheetlike layers
6
Q
Explain desmosomes (intercellular junction)
A
- Form spot welds between cells
- Structural reinforcement
- Outer skin cells
7
Q
Explain gap (intercellular junction)
A
- Tubular channels between cells
- Molecules can move between cells
- Cardiac muscle and intercalated disks
8
Q
Epithelial Tissues
A
- Covers organs and body surfaces
- Lines cavities and hollow organs
- Make up glands
- Lack blood vessels
- Injuries heal rapidly
- Classified according to shape and function
9
Q
Epithelial Shapes
A
- Squamous: flat
- Cuboidal- cube shape
- Columnar- tall
10
Q
Epithelial layers
A
- Simple- one layer
- Stratified- 2 or more layers
- Pseudostratified- not actually a layer, but looks like one
11
Q
Simple Squamous (epithelial)
A
- Filteration, diffusion, osmosis
- Covers surface
- Lines air sacs, and capillaries
- Lines blood and lymphatic vessels
12
Q
Simple Cuboidal (epithelial)
A
- Secretion, absorption, protection
- Surface of ovaries
- Linings of kidney tubules
13
Q
Simple Columnar (epithelial)
A
- Section, absorption, protection
- Lining of uterus
- Lining of stomach
- Lining of intestines
14
Q
Pseudostratified columnar (epithelial)
A
- Protection
- Linings of respiration passages
15
Q
Stratified squamous (epithelial)
A
- Protection
- Skin
- Linings of oral cavities
