2. Simple squamous- composed of a single
layer of flattened cells each with a
somewhat flattened nucleus.
Location: found in the alveoli of
lungs, lining of blood and
lymphatic vessels.
Function: absorption by diffusion
of respiratory gasses between
alveolar air and blood.
Glandular
Location: glands.
Function: secretion.
3. Cont.
Stratified squamous- consists of multiple layers
of cells with the surface cells flattened and the
deeper cells cuboidal.
Location: surface of mucus membrane
lining mouth, esophagus, and vagina,
surface of skin.
Function: absorption by diffusion of
respiratory gasses between alveolar air
and blood.
4. Cont.
Transitional- consists of two or more layers
of cells with the basal cells being mostly
cuboidal and surface cells varying size.
Location: surface of mucus
membrane lining the urinary
bladder and ureters.
Function: permits stretching.
Simple columnar- composed of a single
layer of tall, thin cells.
Location: surface layer of mucus
lining of stomach, intestines, and
part of the respiratory tract.
Function: protection; secretion;
absorption; moving of mucus.
5. Cont.
Stratified columnar- consists of two or more
layers of cells, typically with columnar surface
cells resting upon cuboidal basal cells.
Location: lining of portions of the male
urethra; mucous membrane near anus.
Function: protection.
Pseudostratified- frequently contain goblet cells
and cilia. Appears stratified because the nuclei are
staggered and appear at many levels.
Location: surface of mucous membrane
lining the trachea, large bronchi, nasal
mucosa, & large parts of the male
reproductive tract; lines large ducts of
some glands.
Function: protection.
6. Cont.
Simple cuboidal- consists of a single layer of
cells squarish in profile.
Location: ducts and tubes of many
organs, including exocrine glands and
kidneys.
Function: secretion; absorption.
Stratified cuboidal- consist of two or more
layers of cuboidal cells.
Location: ducts of sweat glands;
lining of pharynx; covering portion
of epiglottis.
Function: protection.
7. Skeletal- composed of muscles attached to
bones. These are the organs that we think
of as our muscles.
Characteristics: many cross
striations, many nuclei per cell.
Long narrow threadlike shape of the
cells. Length of more than 3.75 cm,
but has a diameter of only 10 to 100
u.m.
Location: attached to bone.
Function: initiation of body
movement and locomotion.
8. Cont.
Smooth- sometimes called Visceral muscle
tissues. Long narrow fibers but not as long as
striated fibers.
Location: found in the walls of the
viscera (hollow internal organs e.g.,
the stomach, intestines, and blood
vessels.
Function: movement of substances
through an organ; regulates vessel
diameter.
9. Cont.
Cardiac- also called striated voluntary
muscle; makes up the wall of the heart.
Cardiac tissue consists of cross striations
and unique dark bands. The cells are
shorter, branched, and each cell has one
nucleus that is centrally located and are
joined end to end by junctions called
intercalated discs.
Location: heart.
Function: contraction of heart.
10. Consists of neurons (nerve cells) and
neuroglial cells. Neurons are
specialized to transmit electrical
signals and contain 3 principal parts:
the soma, dendrites, and one axon
(or nerve fiber).
Location: brain, spinal cord,
and peripheral nerves.
Function: detect stimuli,
respond, and transmit
information to other cells.
11. Reticular- consists of branching fibers and
fibroblasts.
Location: stroma of spleen, liver,
lymph nodes, and thymus
Function: support
Dense Regular- consists of closely packed
parallel collagen fibers and fibroblasts
interspersed between the fibers.
Location: tendons; ligaments.
Function: strong support.
12. Cont.
Dense Irregular- similar to dense regular
except that the collagen fibers do not
exhibit a consistent pattern.
Location: dermis; sheaths around
bones, nerves and cartilages.
Function: strong support.
Adipose- consists of adipocytes, which store
fat droplets.
Location: subcutaneous region, bone
marrow, and mesenteries
Function: lipid storage;
thermoregulation; protection.
13. Cont.
Hyaline Cartilage- contains chondrocytes in
lacunae and a matrix of fine collagen fibers
that are not visible.
Location: fetal skeleton; covering of
bones at joints; end of ribs
Function: flexible support
Elastic Cartilage- contains chondrocytes in
lacunae and a matrix of collagen fibers with
elastic fibers randomly oriented.
Location: outer ear; epiglottis;
Eustachian tube
Function: flexible support
14. Cont.
Fibrocartilage- consists of parallel fibers of
collagen fibers with chondrocytes in
lacunae interspersed.
Location: intervertebral discs;
pubic symphysis
Function: firm support
Compact bone- dense calcified tissue with
no spaces visible to the naked eye.
Location: outer surface and shaft of
bone.
Function: support.
15. Cont.
Blood- liquid connective tissue that travels
through vessels. Consists of a liquid matrix
called plasma, cells, and cell fragments
referred to as formed elements.
Location: within blood vessels, bone
marrow, blood sinuses.
Function: transportation, immunity.
Loose Fibrous
Location: beneath skin, between
muscles, beneath epithelial tissues
Function: binds organs together,
holds tissue fluids
