Chapter 5 (Tissues; the stuff on the white slides (if the slide has pics, the pics r here not the words gangalang ;))

1 - merocrine gland

2 - apocrine gland

3 - holocrine gland

Types of Membranes

1 - Serous mMmbrane

• inner lining & covering organs of thorax & abdomen to reduce friction

• lines body cavities that DONT open to outside (omg if i’m serious, i wont open up)

• secretes serous fluid

2 - Mucous Membrane

• lining of digestive, respiratory, urinary & reproductive tracts

• lines tubes/organs that DO open to outside

• secretes mucus

3 - Cutaneous Membrane

• covers body

• skin

4 - Synovial Membrane

• entirely connective tissue

• lines joints

Connective Tissue Major Cell Types

1 - Fibroblast

• most common cell

• large

• secretes ECM fibers

2 - Mast Cells

• large cell

• located near blood vessels

• release heparin (anticoagulant)

• release histamine (promotes inflammation)

3 - Macrophages

• wandering cell

• phagocytic

• important in immunity & prevention of infection

Connective Tissue Fibers

1 - Collagenous Fibers

• thick

• composed of collagen

• great tensile strength

• abundant in dense connective tissue

• hold structures tog

2 - Reticular Fibers

• v thin collagenous fibers

• highly branched

• form delicate supportive networks

3 - Elastic Fibers

• bundles of microfibrils embedded in elastin

• elastic

Connective Tissues

- Loose Connective Tissue

• Areolar

• Adipose

• Reticular

- Dense Connective Tissue

• Dense regular

• Dense irregular

• Elastic

- Specialized Connective Tissue

• Cartilage

• Bone

• Blood

Glandular Epithelium — 2 Types

Composed of cells that are specialized to produce & secrete substances

2 Types:

• Endocrine glands — secrete into body fluids or blood

• Exocrine glands — secrete into ducts

Connective Tissue Types - Cartilage

3 Types:

- Hyaline Cartilage

• most abundant

• fine collagenous fibers

• ends of bones, nose & respiratory passages

- Elastic Cartilage

• flexible bc of elastic fibers

• external ear, larynx

- Fibrocartilage

• v tough bc of many collagenous fibers

• shock absorber

• intervertebral discs, pads of knee & pelvic girdle

Connective Tissue Types - Bone

• rigid matrix with deposits of mineral salts & collagen

• supports

• protects

• forms blood cells

• attachment for muscles

• skeleton

• osteocytes in lacunae

Connective Tissue Types - Blood

• fluid matrix called plasma

• RBCs & WBCs & platelets

• transports & defends

Muscle Tissue Types

3 Types:

- Skeletal

• attached to bones

• voluntary

• striated

- Smooth

• walls of organs

• digestive tract & urinary bladder

• walls of blood vessels

• involuntary

• non-striated

- Cardiac

• heart wall

• involuntary

• striated

• intercalated discs