Monday, September 21, Monday, September 21, 20152015
Turn Tissue writing in; put in Turn Tissue writing in; put in blue basketblue basket
Check your grade (on white Check your grade (on white board) if you didn’t last classboard) if you didn’t last class
Get out paper & something to Get out paper & something to write with. write with.
Get ready to take some notes.Get ready to take some notes.
Info to knowInfo to know
Tomorrow – all Tissue labs due at Tomorrow – all Tissue labs due at beginning of classbeginning of class
Thurs. / Fri. – Tissue Quiz; will cover Thurs. / Fri. – Tissue Quiz; will cover tissue identification & these tissue tissue identification & these tissue notesnotes
Thurs. – HOSA dues & yellow cards Thurs. – HOSA dues & yellow cards must be turned inmust be turned in
Tissue NotesTissue Notes
Chapter 3Chapter 3
BasicsBasics
Are similar cells organized to carry Are similar cells organized to carry out a particular functionout a particular function
4 types: 4 types: 1.1. epithelial epithelial
2.2. connectiveconnective
3.3. musclemuscle
4.4. nervousnervous
Naming (according to shape and Naming (according to shape and arrangement)arrangement)
Simple = single layerSimple = single layer Squamous = thin, flat cellsSquamous = thin, flat cells Cuboidal = cube-shaped cellsCuboidal = cube-shaped cells Columnar = elongated (longer than Columnar = elongated (longer than
wide)wide) Stratified = layeredStratified = layered Pseudo = “false”; looks one way but isn’tPseudo = “false”; looks one way but isn’t Loose = loosely packedLoose = loosely packed Dense = tightly packedDense = tightly packed Smooth = no striations (ridges / stripes)Smooth = no striations (ridges / stripes)
EpithelialEpithelial
function: protection, secretion, absorption,function: protection, secretion, absorption, Location: body surfaces, cover & line internal Location: body surfaces, cover & line internal
organs, organs, compose glandscompose glands Lack blood vessels, cells are tightly packedLack blood vessels, cells are tightly packed Types: simple squamous, simple cuboidal, Types: simple squamous, simple cuboidal,
simple columnar, pseudostratified columnar, simple columnar, pseudostratified columnar, stratified squamous, stratified cuboidal, stratified squamous, stratified cuboidal, stratified columnar, transitional, glandularstratified columnar, transitional, glandular
Endocrine glandsEndocrine glands
Ductless glandsDuctless glands Secretions diffuse directly into the Secretions diffuse directly into the
bloodblood Secrete hormonesSecrete hormones
Exocrine glandsExocrine glands
Have ductsHave ducts Empty their secretions onto the Empty their secretions onto the
epithelial surfaceepithelial surface Examples: sweat glands Examples: sweat glands
(sudoriferous), oil (sebaceous) (sudoriferous), oil (sebaceous) glands, liver, pancreasglands, liver, pancreas
Types of glandsTypes of glands
Merocrine = fluid released; salivary, Merocrine = fluid released; salivary, pancreatic, sweat glands in skinpancreatic, sweat glands in skin
Apocrine = secretion and part of the Apocrine = secretion and part of the cell released; mammary, ceruminous cell released; mammary, ceruminous glands (wax producers) in external earglands (wax producers) in external ear
Holocrine = cell filled with secretion Holocrine = cell filled with secretion released; sebaceous glands (oil) in skinreleased; sebaceous glands (oil) in skin
ConnectiveConnective Bind, support, protect, fill spaces, store Bind, support, protect, fill spaces, store
fat, produce blood cellsfat, produce blood cells Found throughout bodyFound throughout body Good blood supply (well vascularized); Good blood supply (well vascularized);
have extracellular matrix (fibers and a have extracellular matrix (fibers and a ground substance) in betweenground substance) in between
Types: loose connective, adipose (fat), Types: loose connective, adipose (fat), dense connective, hyaline cartilage, dense connective, hyaline cartilage, elastic cartilage, fibrocartilage, bone, elastic cartilage, fibrocartilage, bone, bloodblood
Connective, cont’dConnective, cont’d
ComponentsComponents Fibroblasts = make fibersFibroblasts = make fibers Macrophages = carry out phagocytosisMacrophages = carry out phagocytosis Mast cells = secrete heparin and histamineMast cells = secrete heparin and histamine Chondrocytes = cartilage cellsChondrocytes = cartilage cells Collagenous fiber = provide tensile Collagenous fiber = provide tensile
strengthstrength Elastic = stretchesElastic = stretches Reticular = give delicate supportReticular = give delicate support
MuscleMuscle Function = movementFunction = movement Found attached to bones, in the walls of Found attached to bones, in the walls of
hollow internal organs and the hearthollow internal organs and the heart Muscles contract in response to stimuliMuscles contract in response to stimuli
The muscle fibers shortenThe muscle fibers shorten Types: skeletal (striated), smooth Types: skeletal (striated), smooth
(lacks striations), cardiac (striated)(lacks striations), cardiac (striated) Striated = ridges; alternating light and Striated = ridges; alternating light and
dark cross-markingsdark cross-markings
NervousNervous Transmits electrochemical impulses Transmits electrochemical impulses
for coordination, regulation, for coordination, regulation, integration and sensory receptionintegration and sensory reception
Found in the brain , spinal cord, and Found in the brain , spinal cord, and nervesnerves
Cells connect to each other and other Cells connect to each other and other body partsbody parts
Functional characteristics – irritability Functional characteristics – irritability & conductivity& conductivity
Membranes = 2 types of tissue Membranes = 2 types of tissue working togetherworking together
Serous – line cavities that don’t open Serous – line cavities that don’t open to the outsideto the outside Line the thorax, and abdomen and cover Line the thorax, and abdomen and cover
the organs in these cavitiesthe organs in these cavities Mucous = line cavities that do open to Mucous = line cavities that do open to
the outsidethe outside Oral & nasal cavities; line tubes of Oral & nasal cavities; line tubes of
digestive, respiratory, urinary and digestive, respiratory, urinary and reproductive systemsreproductive systems
Membranes, cont’dMembranes, cont’d
Cutaneous = skinCutaneous = skin Synovial = lines jointsSynovial = lines joints
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