tissues: anna made Flashcards
(41 cards)
what are the 4 categories of tissues
Connective, epithelial, muscle, nervous
types of muscle
Smooth, skeletal, cardiac
skeletal muscle
-Attaches to and moves bones
-Striated
-Multinucleated
-Voluntary
-Requires neural impulse
cardiac muscle
-Muscle tissue of the heart
-Striated
-Branched cells -> Intercalated discs
-Involuntary
-Requires no neural or hormonal stimulus
what are the lines in cardiac muscle called
Intercalated discs
smooth muscle
-Muscle tissue in vessels and organs
-Nonstriated
-Appears smooth
-Involuntary
what muscles are striated, what aren’t
is: cardiac and skeletal
isn’t smooth
Nervous tissue function
-Communication among body systems
-Coordination of systemic activities
what are the 2 types of nervous tissue and their functions
Neurons: Transmit signals
Dendrites, cell body, axon
Neuroglia: Support and protect neurons
what is epithelia tissue
Covering, linings, glands
epithelial cell shapes
Squamous, Cuboidal, Columnar, Transitional
epithelial cell layers
Simple, Stratified, Pseudostratified
Simple Squamous Epithelium
One layer
Squamous cells
Flat
Thinnest barrier
Allows rapid movement of molecules across membrane
Lining of lungs
Capillary walls
Simple Cuboidal Epithelium
One layer
Cuboidal cells
-Cube-shaped
-Secretion
Most glands
Simple Columnar Epithelium
One layer
Columnar cells
Tall and narrow
Absorption
Two types
Ciliated (resp. tract)
Non-ciliated (dig. tract)
Pseudostratified Columnar Epithelium
One layer but looks like more
Large passageways of respiratory tract
Stratified Squamous Epithelium
Multiple layers of squamous cells
Two types
Keratinized
Skin
Non-keratinized
Mouth, throat, vagina, anus
Stratified Cuboidal Epithelium
Two or more layers of cuboidal cells
Forms ducts of exocrine glands
Secretion
Transitional Epithelium
Lining of urinary bladder and ureters
Cells change shape as bladder fills/empties
Allows for stretching
Endocrine gland
“Ductless”
Secrete hormones into blood
Exocrine gland
Have ducts
Unicellular (mucus)
Multicellular
-Sweat glands, salivary glands, mammary glands, etc.
Functions of Connective Tissue
-Physical protection: Bone and adipose tissue
-Support and framework: Bones
-Binding of structures: Ligaments, tendons, skin
-Storage: Adipose (energy) and bone (minerals)
-Transport: Blood
-Immunity: Blood and lymph
what is a matrix made up of
-Ground substance (H20 + chemicals)
-Proteins: Collagen, Elastin, Reticular
Connective Tissues Protein Fibers
Collagen “Ropes”
Elastin “Rubber bands”
Reticular “Beams”