Histology - Tissues, Functions, and Locations

Simple squamous epithelium

Function: Diffusion and filtration of materials

Location: Kidneys (glomeruli), air sacs of lungs, lining of heart, blood vessels, lymphatic vessels, serosae

Functions: 2

Location: 6

Simple Cuboidal epithelium

Function: Secretion and Absorption

Locations: Kidney tubules, ducts and secretory portions of small glands, ovaries

Functions: 2

Locations: 4

Simple Columnar Epithelium

Function: Absorption, Secretion (mucus, enzymes)

Location:

Nonciliated - digestive tract, gallbladder, excretory ducts

Ciliated - small bronchi, uterine tubes, uterus

Functions: 2

Location: 6

Pseudostratified columnar epithelium

Function: Secretion and propulsion of mucus

Location:

Nonciliated - sperm ducts, large gland ducts

Ciliated - trachea, upper respiratory tract

Functions: 2

Locations: 4

Stratified squamous epithelium

Functions: Protection

Location:

Nonkeratinized - linings of esophagus, mouth, and vagina

Keratinized - epidermis

Functions: 1

Locations: 4

Stratified cuboidal epithelium

Function: protection

Location: Sweat glands, mammary glands, salivary glands

Functions: 1

Locations: 3

Stratified columnar epithelium

Functions: Protection and Secretion

Location: rare but small amounts in male urethra, large ducts of some glands

Functions: 2

Locations: 2

Transitional epithelium

Functions: Stretches

Location: Ureters, urinary bladder, urethra

Functions: 1

Location: 3

Embryonic Connective Tissue: Mesenchyme

Function: Gives rise to all other tissue types

Location: Embryo

Function: 1

Location: 1

Connective Tissue Proper: loose connective tissue, areolar

Function: Wraps and cushions organs

Location: Widely distributed under body epithelia. Forms lamina propria (mucous membranes), packages organs, surrounds capillaries

Functions: 2

Locations: 4

Connective Tissue Proper: Loose connective tissue, Adipose

Functions: Reserve Fuel, Insulation, supports and protects organs

Locations: Under skin, around kidneys and eyeballs, within abdomen, breasts

Functions: 4

Locations: 5

Connective Tissue Proper: loose connective tissue, reticular

Function: Forms soft internal skeleton (stroma) that supports other cell types (WBCs, mast cells, macrophages)

Location: Lymphoid organs, lymph nodes, bone marrow, spleen

Functions: 1

Locations: 4

Connective Tissue Proper: Dense connective tissue, dense regular

Functions: attaches muscles to bones, muscles to muscles, bones to bones, withstands stress

Locations: Tendons, ligaments, aponeuroses

Functions: 4

Locations: 3

Connective Tissue Proper: Dense connective tissue, dense irregular

Function: structural strength, withstand tension

Location: Fibrous capsules of organs and joints, dermis, submucosa of digestive tract

Function: 2

Locations: 4

Connective Tissue Proper: Dense connective tissue, elastic

Functions: recoil of tissue after stretching

Locations: Walls of arteries, ligaments in the vertebral column, bronchial tubes

Functions: 1

Locations: 3

Connective Tissue, Cartilage: hyaline

Functions: Support and reinforcement

Location: embryonic skeleton, epiphyses, costal cartilages in ribs, nose, trachea, larynx

Functions: 2

Locations: 6

Connective Tissue, Cartilage: Elastic

Function: Maintain structure and allow flexibility

Location: External ear, epiglottis

Functions: 2

Locations: 2

Connective Tissue, Cartilage: fibrocartilage

Function: Provide tensile strength, absorb compressive shock

Location: Intervertebral discs, pubic symphysis, discs of knee joint

Functions: 2

Locations: 3

Connective Tissue: bone

Function: Support, protection, stores calcium, minerals, and fat, bone marrow produces blood cells

Location: Bones

Functions: 6

Location: 1

Connective Tissue: Blood

Function: Transport (gases, nutrients, wastes)

Location: In blood vessels

Functions: 1

Locations: 1

Muscle: skeletal

Functions: Voluntary movement

Location: Skeletal muscles attached to bones or skin

Functions: 1

Locations: 2

Muscle: cardiac

Function: Propels Blood, Involuntary control

Location: Walls of heart

Functions: 2

Location: 1

Muscle: Smooth

Function: Involuntary control, propels substances along internal passageways

Location: Walls of hollow organs

Functions: 2

Location: 1

Nervous Tissue

Function: transmit electrical signals from sensory receptors and to effectors

Location: Brain, spinal cord, nerves

Function: 1

Location: 3

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