What are the four primary tissue types found in adult organs - answer epithelial,
connective, nervous, and muscular tissue.
Epithelial - answer tissue lines body cavities, covers the body surface, and forms the
lining of many organs.
Connective - answer tissue serves in most cases to bind organs to each other.
Nervous and muscular - answer tissue are considered excitable tissues because they
are very sensitive to outside stimuli.
A simple epithelium - answer consists of a single layer of cells with every cell touching
the basement membrane.
A stratified epithelium - answerconsists of 2 or more layers of cells with only the deepest
layer of cells touching the basement membrane.
The cells of an epithelium can be - answersquamous (flat), columnar (tall and narrow),
or cuboidal (round or cubed).
Goblet cells are - answerunicellular glands that produce the protective mucous coatings
which cover the mucous membranes. They are usually found scattered throughout a
simple columnar epithelium.
A keratinized - answerepithelium has a surface layer of dead cells.
The epidermis - answeris a keratinized stratified squamous epithelium.
A nonkeratinized - answerepithelium lacks the surface layer of dead cells but provides a
moist and slippery surface that is well suited to resist stress.
The vagina, tongue, and esophagus consist of a - answernonkeratinized stratified
epithelium.
Cartilage is - answera supportive connective tissue with a flexible rubbery matrix.
, Differences in the fibers provide a basis for classifying cartilage into three types -
answerhyaline cartilage, elastic cartilage, and fibrocartilage.
Hyaline cartilage - answermakes up the tip of our nose.
Elastic cartilage - answeris what gives the shape to our external ear.
Fibrocartilage - answeris found in the intervertebral discs.
Dense regular connective tissue - answeris named for two properties; the collagen
fibers are closely packed and leave relatively little open space, and the fibers are
parallel to each other. Collagenous fibers are very abundant in; tendons and ligaments.
Tendons and ligaments get their toughness, flexibility, and glistening white appearance
from - answercollagen fibers.
Muscular and nervous tissues respond quickly to - answeroutside stimuli by means of
changes in membrane potential called excitable tissues.
Nervous tissue consists predominantly of two cell types - answerneurons and neuroglia
(glial cells).
Skeletal muscle is - answerstriated and voluntary.
Cardiac muscle is - answerstriated and involuntary.
Smooth muscle is - answernonstriated and involuntary.
The three types of intercellular junctions are - answertight junctions, desmosomes, and
gap (communicating) junctions.
In the intestine, tight junctions ensure that most nutrients pass through the -
answerepithelial cells and not between them.
The basal cells of an epithelium are linked to the underlying basement membrane by -
answerhemidesmosomes.
Endocrine glands - answersecrete hormones into the blood.
Exocrine glands - answersecrete their product by way of a duct that either opens onto a
body surface or into a body cavity.
Merocrine glands - answer(such as tear glands) have vesicles that release their
secretion by exocytosis.
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