Tissues Lab Exercise 6A1- name, NO PICTURE, function, and location

simple squamous epithelium

Function: Allows materials to pass by

diffusion and filtration in sites where protection

is not important; secretes lubricating

substances in serosae.

Location: Kidney glomeruli; air sacs of lungs;

lining of heart, blood vessels, and lymphatic

vessels; lining of ventral body cavity (serosae).

simple cuboidal epithelium

Function: Secretion and absorption.

Location: Kidney tubules; ducts and secretory

portions of small glands; ovary surface

simple columnar epithelium

Function: Absorption; secretion of mucus,

enzymes, and other substances; ciliated type

propels mucus (or reproductive cells) by

ciliary action.

Location: Nonciliated type lines most of

the digestive tract (stomach to rectum),

gallbladder, and excretory ducts of some

glands; ciliated variety lines small bronchi,

uterine tubes, and some regions of the uterus.

pseudostratified (ciliated) columnar epithelium

Function: Secretes substances, particularly

mucus; propulsion of mucus by ciliary action.

Location: Nonciliated type in male’s

sperm-carrying ducts and ducts of large

glands; ciliated variety lines the trachea, most

of the upper respiratory tract.

stratified squamous epithelium

Function: Protects underlying tissues in

areas subjected to abrasion.

Location: Nonkeratinized type forms the

moist linings of the esophagus, mouth, and

vagina; keratinized variety forms the

epidermis of the skin, a dry membrane.

stratified cuboidal epithelium

Function: Protection

Location: Largest ducts of sweat glands, mammary glands, and salivary glands.

stratified columnar epithelium

Function: Protection and secretion

Location: (very rare in body) male urethra; large ducts of some glands

transitional epithelium

Function: Stretches readily and permits distention of urinary organ by contained urine

Location: Lines the ureters, urinary bladder, and part of the urethra

areolar connective tissue

Function: Wraps and cushions organs; its

macrophages phagocytize bacteria; plays

important role in inflammation; holds and

conveys tissue fluid.

Location: Widely distributed under epithelia

of body, e.g., forms lamina propria of mucous

membranes; packages organs; surrounds

capillaries.

adipose connective tissue

Function: Provides reserve fuel; insulates

against heat loss; supports and protects

organs.

Location: Under skin; around kidneys and

eyeballs; within abdomen; in breasts

reticular connective tissue

Function: Fibers form "stroma" (soft internal skeleton), which supports other cell types (WBCs, mast cells, and macrophages)

Location: Lymphoid organs [lymph nodes, bone marrow, and spleen]

dense regular connective tissue

Function: Attaches muscles to bones or to

other muscles; attaches bones to bones;

withstands great tensile stress when pulling

force is applied in one direction.

Location: Tendons, most

ligaments, aponeuroses.

dense irregular connective tissue

Function: Withstand tension exerted in many directions; provides structural strength

Location: Fibrous capsules of organs and joints; dermis of the skin; submucosa of digestive tract

hyaline cartilage

Function: Supports and reinforces; serves as

resilient cushion; resists compressive stress.

Location: Forms most of the embryonic

skeleton; covers the ends of long bones in

joint cavities; forms costal cartilages of the

ribs; cartilages of the nose, trachea, and

larynx

elastic cartilage

Function: Supports and reinforces; serves as resilient cushion; resists compressive stress

Location: auricle (external ear); epiglottis

fibrocartilage

Function: Tensile strength with the ability to

absorb compressive shock.

Location: Intervertebral discs; pubic

symphysis; discs of knee joint.

osseous tissue

Function: Bone supports and protects

(by enclosing); provides levers for the muscles

to act on; stores calcium and other minerals

and fat; marrow inside bones is the site for

blood cell formation (hematopoiesis).

Location: Bones

blood

Function: Transport of respiratory gases,

nutrients, wastes, and other substances.

Location: Contained within blood vessels.

smooth muscle tissue

Function: propels substances (foodstuffs/urine; baby) along internal passageways; Involuntary control

Location: walls of hollow organs

cardiac muscle tissue

Function: As it contracts, it

propels blood into the circulation; involuntary

control.

Location: The walls of the heart.

skeletal muscle tissue

Function: Voluntary movement; locomotion;

manipulation of the environment; facial

expression; voluntary control.

Location: In skeletal muscles attached to

bones or occasionally to skin

nervous tissue

Function: Neurons transmit electrical signals from sensory receptors and to effectors (muscles/glands); supporting cells support/protect neurons

Location: Brain, spinal cord, and nerves