Connective tissues

Loose Connective Tissue

Cells: Fibroblasts, macrophages, mast cells, adipocytes.

Fibers: Collagen, elastic, reticular.

Dense Connective Tissue

Cells: Fibroblasts.

Fibers: Collagen (dense regular or irregular).

Cartilage

Cells: Chondrocytes, chondroblasts.

Fibers: Collagen, elastic (depends on type).

Bone

Cells: Osteocytes, osteoblasts, osteoclasts.

Fibers: Collagen (in a mineralized matrix)

Blood

Cells: Red blood cells, white blood cells, platelets.

Fibers: Plasma proteins (fibrin for clotting).

Ground substance

Liquid
Solid
Gel

Three type of Loose Connective tissue

Areolar
Adipose
Reticular

Skeletal Muscle

Striated: Yes

Voluntary/Involuntary: Voluntary

Function: Moves bones

Cardiac Muscle

Striated: Yes

Voluntary/Involuntary: Involuntary

Function: Pumps blood through the heart

Smooth Muscle

Striated: No

Voluntary/Involuntary: Involuntary

Function: Controls internal organs

What are the components and functions of nervous tissue?

Components:
Neurons: Dendrites, Cell Body, Axon
Neuroglia (Glial Cells): Astrocytes, Oligodendrocytes, Schwann Cells, Microglia

Functions
Sensory Input
Integration
Motor Output

What are the types of cell junctions and their functions?

1. Tight Junctions: Seal cells together; prevent leakage of extracellular fluid.

2. Desmosomes: Provide strong adhesion between cells; contribute to tissue integrity.

3. Gap Junctions: Allow direct communication between cells; permit exchange of ions and small molecules.

4. Adherens Junctions: Provide mechanical support; anchor cells via actin filaments.