Set 3: Anatomy Ch. 2 Set 3: Tissues (2.3)

Four tissue types

Epithelial, connective, muscle, nerve

Apical (epithelial)

Faces the outside world or the lumen

Basal (epithelial)

Faces deeper body cells

Epithelial layers

Simple (one layer) or stratified (many layers)

Epithelial shapes

Squamous, cuboidal, columnar

Epithelial glands

Secrete substances

Exocrine glands

Secrete through ducts; unicellular or multicellular, simple or compound

Endocrine glands

Secrete hormones into the blood

Connective tissue functions

Strengthens, protects organs, maintains organ shape, framework for muscles to pull

Connective tissue fibers

Collagen, reticular, elastic

Classes of connective tissue

Connective tissue proper, cartilage, bone, blood

Tensile strength vs. elasticity

Tensile strength = collagen fibers; elasticity = elastic fibers

Areolar tissue

Loose connective tissue under epithelium

Reticular tissue

Loose connective tissue in the spleen

Adipose tissue

Loose connective tissue that is fat

Regular dense connective tissue

Tendons

Irregular dense connective tissue

Dermis

Dense elastic connective tissue

Large artery walls

Chondroblasts

Cartilage-making cells

Hyaline cartilage

Ends of long bones

Elastic cartilage

External ear

Fibrocartilage

Intervertebral discs

Bone (osseous) tissue

Protects organs and supports the body

Muscle tissue types

Skeletal, cardiac, smooth

Nerve tissue

Central and peripheral nervous system; made of neurons and glial cells