Erythrocytes, leukocytes and platelets within a plasma matrix, transports oxygen, CO2, nutrients and other dissolved molecules throughout the body located in: arteries, veins and capillaries.
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Adipose
________:: matrix crowded by tightly- packed adipocytes, serves to insulate and protect organs, provides energy storage depot located in: around major organs, within subcutaneous layer (under dermis)
________:: has higher flexibility and stretch, allows for tissue to return to original shape located in: outer ear, epiglottis.
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Reticulin
________:: short /thin, mesh- like, provide greater degree of movement than collagen.
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Microvilli
________:: Abundant on transport cells Dramatically increase surface area Found in intestinal lining, kidneys.
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Glial Cells
________:: provide structural support, protection and nourishment for neurons in the brain and spinal cord.
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Hyaline
:: flexible, firm gel, secreted by chondroblasts, embedded in lacunae, cushions supports and reinforces other tissues and organs located in: nose, trachea, ribs, ends of long bones, embryonic skeleton.
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Fibrocartilage
________:: Firm hyaline matrix, with more organized collagen fibers, resists compressive force located in: components of joints with limited flexibility, menisci, public symphysis.
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Holocrine
________:: Product secreted by full cell rupturing.
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Merocrine
________:: Product secreted directly through plasma membrane by exocytosis.
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Neurons
________:: receive sensory information and carry it to the brain, transmit motor impulses from brain to effector organs, form synapses with one another.
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Histology
________:: the study of tissues.
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single layer of cells
Pseudostratified:: ________ that appears as more due to nuclei placement.
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Apocrine
________:: Product secreted by pinching off membrane, loss of cytoplasm.
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Areolar
:: Loosely packed assembly of all fiber types, fibroblasts and immune cells, cushions organs, key immune mediators located in: support under epithelial layers and surrounding organs.
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Simple Squamous
________:: single layer of flat, disc- like cells flattened nuclei surface for filtration and diffusion located in: air sacs of lung, glomeruli, blood vessel /capillary lumens, body cavity linings.
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Nervous Tissue
________:: Conduct electrical impulses, transfer process and store information, comprised of neurons and glial cells.
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Smooth Muscle
________:: short /tapering cells, no striation, involuntary contraction changes diameter of vessels /chambers (blood vessels, urinary bladder, digestive organs, uterus)
________:: single layer of cube- like cells large, round nuclei responsible for secretion and absorption located in: ducts and glands, kidney tubules, ovary, thyroid.
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Elastin
________:: long /branched, can stretch /recoil, provides flexibility.
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Histology
the study of tissues
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4 types of tissues
Epithelial Connective Muscular Neural
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Epithelial tissue
avascular sheet of cells that covers body surfaces or cavities
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2 main forms of epithelial tissue
Covering and lining epithelia (skin), Glandular epithelia (salivary glands)
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Microvilli
Abundant on transport cells Dramatically increase surface area Found in intestinal lining, kidneys
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Cilia
Beat in coordinated fashion Move fluid along surface Found in trachea, oviduct
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Characteristics of epithelial tissues
Tightly packed (barrier, absorption/secretion, hemidesmosomes, desmosomes) Organized assembly (apical/basolateral surface, surfaces differ in function) Exhibit polarity (necessary for selective movement of molecules) Highly regenerative (often damaged)
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Simple
single layer of cells
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Stratified
2 or more layers of cells
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Pseudostratified
single layer of cells that appears as more due to nuclei placement
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Squamous
flat, scale-like
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Cuboidal
box-like
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Columnar
tall, rectangular-shaped
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Endocrine
Secrete hormones into local capillaries
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Merocrine
Product secreted directly through plasma membrane by exocytosis
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Apocrine
Product secreted by pinching off membrane, loss of cytoplasm
long/branched, can stretch/recoil, provides flexibility
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Reticulin
short/thin, mesh-like, provide greater degree of movement than collagen
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Characteristics of Connective Tissues
Protection, Structural Support Energy, Storage, Insulation Transporting Substances
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3 types of Muscular Tissue
skeletal, cardiac, smooth
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Skeletal Muscle
controlled by voluntary nervous system, moves and stabilizes the skeleton, contains elongated cells (fibers held together by loose connective tissue, contains many nuclei, possesses microscopic striations)
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Cardiac Muscle
only in heart, short/branched fibers, single nucleus, striated, involuntary contraction
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Smooth Muscle
short/tapering cells, no striation, involuntary contraction changes diameter of vessels/chambers (blood vessels, urinary bladder, digestive organs, uterus)
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Nervous Tissue
Conduct electrical impulses, transfer process and store information, comprised of neurons and glial cells
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3 parts of Nervous Tissue
Neurons, Glial Cells Location
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Neurons
receive sensory information and carry it to the brain, transmit motor impulses from brain to effector organs, form synapses with one another
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Glial Cells
provide structural support, protection and nourishment for neurons in the brain and spinal cord