Human anatomy tissues

Homeostasis

Maintaining balance: support, protection, communication

Tissue Definition

Cells + matrix working together

Four Tissue Types

Epithelial, Connective, Muscular, Nervous

Epithelial Tissue

Covers and lines

Connective Tissue

Supports and connects

Muscular Tissue

Contracts for movement

Nervous Tissue

Sends electrical signals

Continuous Sheets

Cells tightly packed

Apical Surface

Faces out

Lateral Surfaces

Connects to cells

Basal Surface

Anchored down

Glands

Secrete hormones, juices, sweat

Connective Tissue

Most diverse; connects, supports

Extracellular Matrix

Determines tissue type (firm/flexible)

Loose Connective

Areolar, adipose, reticular

Dense Connective

Regular, irregular, elastic

Specialized Connective

Cartilage, bone, blood

Areolar

Strength & support

Adipose

Insulation & energy

Reticular

Framework

Dense Regular

Strength in one direction

Dense Irregular

Strength in many directions

Elastic

Recoil after stretch

Cartilage

Withstands stress

Hyaline

Glassy cartilage

Fibrocartilage

Dense collagen

Elastic Cartilage

Flexible

Bone

Skeleton, stores minerals

Blood

Cells in plasma

Muscle Tissue

For movement

Skeletal Muscle

Voluntary, striated

Cardiac Muscle

Involuntary, striated

Smooth Muscle

Involuntary, non

Neurons

Send signals

Neuroglia

Support cells