The Tissues and integumentary System Flashcards
Gives rise to epidermis and nervous system
Ectoderm
Produces mucous membrane of respiratory
tract, thyroid gland, secretory parts of pancreas
Endoderm
Gives rise to connective and muscle tissue
Mesoderm
Cells are specialized for particular functions
Body Tissues
group of cells with similar structure and function
Tissues
FOUR PRIMARY TYPES
- Epithelium
- Connective Tissue
- Muscle Tissue
- Nervous Tissue
TO FOUND IN
o body coverings
o body linings
o Glandular tissues
Epithelial Tissue
TO FUNCTION AS Protection Absorption Filtration Secretion
Epithelial Tissue
Epithelial cells may assume one of the three
basic shapes:
squamous, cuboidal, or columnar
it appear as single or multiple
layers.
Epithelia
Consists of a single layer of flat, scale-like cells
SIMPLE SQUAMOUS
Consists of a single layer of cube-like cells
SIMPLE CUBOIDAL
Consists of a single layer of tall cells
SIMPLE COLUMNAR
Consists of a single layer of irregularly
shaped columnar cells
PSEUDOSTATIFIED
protection as it forms a thick
layer of epithelium
STRATIFIED SQUAMOUS
two layers of cuboidal cells
STATIFIED CUBOIDAL
surface cells are columnar, cells underneath vary in size and shape
STRATIFIED COLUMNAR
found mainly in ducts of
large glands
STRATIFIED CUBOIDAL AND COLUMNAR
Multiple cell layers
TRANSITIONAL EPITHELIUM
GRANDULAR EPITHELIUM
-ENDOCRINE
GLAND
-EXOCRINE GLANDS
o ductless
o secrete hormones
ENDOCRINE
GLAND
o ducts to surface
o oil and sweat
EXOCRINE GLANDS
TO FOUND IN
o Everywhere
CONNECTIVE TISSUE
TO FUNCTION AS
- Binds tissue together
- Supports the body
- Provides protection
CONNECTIVE TISSUE
made up of non-living
EXTRACELLULAR MATRIX
TWO MAIN ELEMENTS OF EXTRACELLULAR MATRIX
GROUND SUBSTANCE
FIBERS
mostly water along with adhesion and polysaccharide molecules
GROUND SUBSTANCE
produces by cells
FIBERS
THREE TYPES OF FIBERS
o Collagen fibers
o Elastic fibers
o Reticular fibers
Loose packing, support, and
nourishment for the structures
with which it is associated
AREOLAR CONNECTIVE TISSUE
Packing material, thermal
insulator, energy storage, and protection of organs against injury from being bumped or jarred
ADIPOSE CONNECTIVE TISSUE
consists of adipocytes, or fat cells. They reduces heat loss and provide great amount of energy reserve, support and protection.
Adipose tissue
Provides a superstructure for lymphatic and hemopoietic tissues
RETICULAR CONNECTIVE TISSUE
Withstand great pulling
forces exerted in the direction of fiber orientation due to great tensile strength and stretch resistance
DENSE REGULAR COLLAGENOUS
more fibers, less ground substance
Dense
fewer fibers, more ground substance
Loose
Capable of stretching and
recoiling like a rubber band with strength in the direction of fiber orientation
DENSE REGULAR ELASTIC
semisolid matrix
Cartilage
Allows growth of long
bones; provides rigidity with some flexibility in the trachea, bronchi, ribs, and nose; forms strong, smooth, yet somewhat flexible articulating surfaces; forms the embryonic skeleton
HYALINE CARTILAGE
consists differentiated fibroblasts and collagen fibers.
FIBROCARTILAGE
Somewhat flexible and
capable of withstanding considerable pressure; connects structure subjected to great pressure
FIBROCARTILAGE
solid matrix
BONE
Provides great strength and support
and protects internal organs, such as brain; bones also provides attachment sites for muscles and ligaments; the joints of bones allow movements
BONE
FLUID CONNECTIVE TISSUE
BLOOD
Transports oxygen, carbon dioxide, hormones, nutrients, waste products, and other substances; protects the body from infection and is involved in temperature regulation
BLOOD
Hemopoietic Tissue
o Red marrow
o Yellow marrow
composed of elongated muscle cells called muscle fibers.
Muscular tissue
There are three types of muscular tissue
Skeletal Muscles, Cardiac Muscles and Smooth muscles.
Movement of the body; under voluntary control
SKELETAL TISSUE
Pumps the blood; under involuntary
(unconscious) control
CARDIAC MUSCLE
Regulates the size of organs. forces fluid through tubes, controls the amount of light entering the eye, and produces “goose bumps” in the skin; under involuntary (unconscious) control
SMOOTH MUSCLE
transmits impulses to coordinate activities including involuntary controls because these specialized cells makes up the brain, spinal cord and nerves.
NERVOUS TISSUE
transmit information in the form of action potentials, store information, and integrate and evaluate data; neuroglia support, protect, and form specialized sheaths around axons
NERVOUS TISSUE
The skin is a multilayered organ that consists of two main parts:
Epidermis and Dermis
made from keratinized stratified squamous epithelium, is the superficial, thinner portion of the skin that prevents water loss and resists abrasion.
Epidermis
is the deeper, thicker and dense connective tissue portion.
Dermis
FIVE LAYERS
STRATUM BASALE STRATUM SPINOSUM STRATUM GRANULOSUM STRATUM LUCIDUM STRATUM CORNEUM
is the deepest layer that consists of either columnar or cuboidal cells aligned in single row.
STRATUM BASALE
This layer provides strength and flexibility to the skin. Cells in the more superficial portions of this layer are beginning to flatten.
STRATUM SPINOSUM
this layer is the presence of the protein keratin and membrane- enclosed lamellar granules.
STRATUM GRANULOSUM
This layer is found only in the areas of the body (thick skin) where exposure to friction is greatest (for example, fingertips, palms, soles).
STRATUM LUCIDUM
The interior of the cells contains mostly keratin that aids in its natural strength. Its multiple layers of dead squamous cells filled with keratin help to protect deeper layers from injury and microbial invasion.
STRATUM CORNEUM
also called as the stratum germinatum
STRATUM BASALE
8 to 10 layers of many-sided
keratinocytes that t closely together.
STRATUM SPINOSUM
3 to 5 layers of flattened
keratinocytes that are undergoing apoptosis.
STRATUM GRANULOSUM
4–6 layers of flattened clear, dead
keratinocytes that contain large amounts of keratin.
STRATUM LUCIDUM
25 to 30 layers of flattened dead cells
from the deeper strata.
STRATUM CORNEUM
composed of dense collagenous
connective tissue containing fibroblasts, adipocytes, and macrophages.
DERMIS
is caused by pigments such as melanin, hemoglobin and carotene.
Skin color
plays responsible for its pale yellow to reddish brown to black shade.
melanin
A deficiency of oxygen in circulating
blood
Cyanosis
Impaired liver function (such as from hepatitis or liver disease) that allows bile to accumulate, which stains the skin
Jaundice
A deficiency of hormones from the adrenal gland, such as occurs with Addison disease
Bronzing
A genetic lack of melanin
Albinism
Increased blood flow in dilated blood vessels close to the skin’s surface; may result from heat, exercise, sunburn, or emotions such as embarrassment or anger
Erythema
Blue tint
Cyanosis
Yellow discoloration of skin and the whites of the eyes
Jaundice
A golden brown skin color
Bronzing
Extremely pale skin, white hair, and pink eyes
Albinism
Abnormal redness
Erythema
Decreased blood flow, such as occurs from c temperatures, fear or emotional stress, low blood pressure, or blood loss
Pallor
The breakdown of clotted blood under the skin
Bruise (hematoma)
Pale Skin
Pallor
Bluish, black or yellowish mark on the skin
Bruise
protects the skin and other structures of the body.
Hair
plates of tightly packed, hard, dead, keratinized cells of the epidermis.
Nails
s stratum corneum that extends onto the nail body.
The cuticle, or eponychium
The average growth of fingernails
1 mm (0.04 inch) per week.
produce secretions that perform a variety of functions.
Glands
two major glands located in the skin
sebaceous and sweat glands
TWO MAJOR PARTS OF GLANDS
SWEAT GLANDS
SEBACEOUS GLANDS
TWO TYPES OF SWEAT GLANDS
Eccrine Glands
Apocrine Glands
produces a transparent, watery fluid called sweat that contains small amount of potassium, ammonia, lactic acid, uric acid and other wastes.
Eccrine Glands
is limited to the axillary and pubic regions and produces a thicker sweat often released during emotional stress.
Apocrine Glands
lies in the dermis and open
into hair follicles or directly onto the skin. It secretes sebum as an oily substance that contains lipids and cellular debris.
SEBACEOUS GLANDS
plays an important role in the protection of the ear canal against physical damage and microbial invasion.
Cerumen
the skin of the
human external auditory canal are modified apocrine glands, which, together with sebaceous glands, produce the cerumen, the ear wax.
ceruminous glands