Exercise 6 Tissue Functions

Front 1

Epithelial tissue

Back 1

Occurs in the body as:

Cover body surface and cavity linings and glandular epithelium

Front 2

Epithelial functions

Back 2

Protection- Protects against chemicals and bacteria

Absorption- lining of stomach and small intestines

Filtration- kidney tubules

Secretion- Glandular epithelium

excretion sensory reception

Front 3

Epithelial characteristics

Back 3

•Apical surface (top)

•Basal surface (middle)

•Bound together by junctions

•Supported by connective tissue

-basement membrane (bottom)

•Avascular

-has nerves but no blood supply of their own

•Regeneration

Front 4

Basal membrane

Back 4

•Adhesive material

•Secreted by the basal lamina and reticular lamania

Front 5

Epithelial shape

Back 5

Simple-one layer

Stratified- two or more layers

Squamous- scale

Cuboidal-square

Columnar- Rectangle

Front 6

Simple squamous epithelium

Back 6

Function: diffusion and filtration

Lubrication of serosae

Location: Kidney, lining of heart, lymphatic vessels, blood vessels and air sacs, lining of ventral body cavity (serosae)

Front 7

Simple cuboidal epithelium

Back 7

Function: secretion and absorption Location: Kidney tubules, ducts, secretory, portion of small glands, Ovary surface

Front 8

Simple columnar epithelium

Back 8

Function: Absorption and secretion of mucus enzymes, Cilla propels mucusLocation: digestive tract (stomach to rectum), gallbladder, small bronchi, uterine tubes, uterus

Front 9

Pseudstratified columnar epithelium

Back 9

Function:

Secretes mucus, propulsion of mucus by cillary action

Location:

Sperm carrying ducts, trachea, upper respiratory tract

Front 10

Stratified squamous epithelium

Back 10

Function:

Protects underlying tissues in areas subjected to abrasionLocation: Lining of esophagus, mouth, and vagina

Front 11

Stratified cuboidal epithelium

Back 11

Function: protection Location: sweat glands, mammary glands, and salivary glands

Front 12

Stratified columnar epithelium

Back 12

Function: Protection and secretion Location: small amounts in urethra

Front 13

Transitional epithelium

Back 13

Function: urinary organ stretch

Location: lines ureter, bladder and part of urethra

Front 14

Connective tissue

Back 14

Most abundant tissue type

4 types

•Connective tissue proper

•Cartilage

•Bone

•Blood

Front 15

Connective tissue characteristics

Back 15

Function: protect, support, insulation and binding of other tissues.

•Derived from embryonic tissue (Mesenchyme)

•Vascular except cartilage is avascular

•No cellular non living material between cells of connective tissue

Front 16

Nervous tissue

Back 16

Function: neurons transmit electrical signals from sensory receptors and effectors (muscle & glands)

Location: Brain, spinal cord and nerves

Front 17

Muscle tissue

Back 17

Function: contraction and movement

3 types:

•skeletal

•cardiac

•Smooth

Front 18

Skeletal muscle

Back 18

Long and cylindrical, straiations

Voluntary control

Attached to skeleton

Front 19

Cardiac Muscle

Back 19

•Branching of muscle tissue

•No nuclei

•Junctions called intercalated discs

Function: contractions cause blood to circulate, involuntary

Front 20

Smooth muscle

Back 20

Eye shaped, smooth

Function: propels food stuff, urine and babies along internal passageways, involuntary

Location: hollow organs

Front 21

Epithelial cells

Back 21

Gland forming

-Exocrine

•Has ducts

•Sweat and oil glands, liver, pancreas

-Endocrine

•Ductless glands

•Secrete hormones through extracellular matrix, blood, lymphnodes

Front 22

Pseudostratified epithelium

Back 22

Simple columnar w/ cells that vary in height and have nuclei st diff levels

Appears to be stratified but is not

Front 23

Transitional epithelium

Back 23

Stratified squamous epithelium w/ rounded cells that have the ability to slide over each other

Found in urinary organs can stretch