Tissues (BIO-201L)

Epithelium Tissue

Tightly packed cells that cover and line body surfaces

Connective Tissue

Widely scattered cells in a non-living matrix

Muscle Tissue

Excitable and contractile tissue

Nervous Tissue

Excitable tissue used to send short-term signals to specific targets

Tissue

Group of cells with common function

Gap Junctions

Allows for free diffusion of ions and small molecules between two cells

Demosomes

Durable intracellular connection

Spot Desosomes

Stabilizes shape of cell

Hemidesmosomes

Attach the cell to basement membrane

Tight Junction

Forms water tight barrier

Simple Squamous Epithelium Location

Lining of heart and blood vessels

Simple Squamous Epithelium Function

Reduces friction and absorption

Simple Squamous Epithelium

Stratified Squamous Epithelium Location

Lining of mouth and throat

Stratified Squamous Epithelium Function

Protection against pathogens

Stratified Squamous Epithelium

Keratinized Stratified Squamous Epithelium

Simple Cuboidal Epithelium Location

Thyroid and kidney tubles

Simple Cuboidal Epithelium Function

Protection, secretion, absorption

Simple Cuboidal Epithelium

Stratified Cuboidal Epithelium Location

Sweat gland duct

Stratified Cuboidal Epithelium Function

Protection, secretion, absorption

Stratified Cuboidal Epithelium

Transitional Epithelium Location

Urinary bladder and bladder

Transitional Epithelium Function

Permits expansion and recoils

Transitional Epithelium

Simple Columnar Epithelium Location

Lining of stomach and intestines

Simple Columnar Epithelium Function

Protection, Secretion, Absorption

Simple Columnar Epithelium

Stratified Columnar Epithelium Location

Mammary glands and salivary gland ducts

Stratified Columnar Epithelium Function

Protection

Stratified Columnar Epithelium

Endocrine Gland

Secretes into blood

Exocrine Gland

Secretes through ducts

Merocrine Secretion

Releases products through exocytosis

Apocrine Secretion

Top part of cell pinches off to release secretion

Holocrine Secretion

Cell dies and releases secretion

Connective Tissue Proper

Contains many types of cells and fibers - Dense and Loose

Fluid Connective Tissue

Distinct cells in watery matrix - Blood and Lymph

Supportive Connective Tissue

Less diverse cells with densely packed fibers - Bone and Cartilage

Types of Dense Connective Tissue

Regular, Irregular, Elastic

Types of Loose Connective Tissue

Areolar, Adipose, Reticular

Types of Bone Connective Tissue

Compact and Spongy

Types of Cartilage Connective Tissue

Hyaline, Elastic, Fibrocartilage

Dense Regular Connective Location

Between tendons and ligaments

Dense Regular Connective Function

Reduces muscle friction

Dense Regular Connective Tissue

Dense Irregular Connective Location

Nerve and muscle sheaths

Dense Irregular Connective Function

Prevents organ overexpansion

Dense Irregular Connective Tissue

Elastic Connective Location

Blood vessel walls

Elastic Connective Function

Cushions shocks

Elastic Connective Tissue

Areolar Tissue Location

Around joints and blood vessels

Areolar Tissue Function

Cushions organs

Areolar Tissue

Adipose Tissue Location

Padding around eyes and kidneys

Adipose Tissue Function

Stores energy

Adipose Tissue

Reticular Tissue Location

Liver and kidney

Reticular Tissue Function

Provides supporting framework

Reticular Tissue

Blood

Compact Bone Supporting Connective Tissue Location

All Bones - Femur and Humerus

Compact Bone Supportive Connective Tissue Function

Supports body weight and has central canal with artery and vein

Compact Bone Supportive Connective Tissue

Spongy Bone Supportive Connective Tissue Location

Center of long and short bones

Spongy Bone Supportive Connective Tissue Function

Forms lines of stress

Spongy Bone Supportive Connective Tissue

Hyaline Cartilage Location

Covers bone surfaces of synovial joints

Hyaline Cartilage Function

Reduces friction between joints

Hyaline Cartilage

Elastic Cartilage Location

Auricle of external ear and auditory canal

Elastic Cartilage Function

Tolerates distortion

Elastic Cartilage

Fibrocartilage Location

Pads within knee joints

Fibrocartilage Function

Resists compression

Fibrocartilage