Tissues Human Biology

Tissues Groups of cells that are specialized in function or structure Groups of cells that are specialized in function or structureEpithelialConnectiveMuscleNervous

Epithelial Tissue Cover all body surfaces Cover all body surfaces Line all organs Line all organs Major part of glands Major part of glands Have “free” outside Have “free” outside Tightly packed cells Tightly packed cells Functions: Lining, sensory, secretion, absorption, excretion

Definitions Squamous Squamous Think “squat” flattened cells Think “squat” flattened cells Cuboidal Cuboidal Cube shaped Cube shaped Columnar Columnar Elongated cells Elongated cells Stratified Stratified “Layered” “Layered”

Epithelial Tissues Types Make a table in your notes like this: (8 X 3) Make a table in your notes like this: (8 X 3) Epithelial Type Location (lining) Function

Simple & Stratified Squamous Tissue Simple Squamous Tissue Stratified Squamous Tissue

Epithelial Type Location (lining) Function Simple Squamous Air sacs of lungs, blood vessels lubrication Stratified Squamous Skin, mouth... protection Simple Columnar Pseudostratified Columnar Stratified Columnar Simple Cuboidal Stratified Cuboidal Transitional

Simple & Stratified & Pseudostratified Columnar Tissue Simple Columnar Tissue Pseudo-Stratified Columnar Tissue

Simple & Stratified Cuboidal Tissue Stratified Columnar Tissue

Epithelial Type Location (lining) Function Simple Squamous Air sacs of lungs, blood vessels lubrication Stratified Squamous Skin, mouth... protection Simple Columnar Stomach, intestines, uterus Protective, SA, secrete mucus Pseudostratified Columnar Trachea, fallopian tubes movement Stratified Columnar Vas deferens, male urethra Support & some movement Simple Cuboidal Stratified Cuboidal Transitional

Simple & Stratified Cuboidal Tissue Simple Cuboidal Tissue Stratified Cuboidal Tissue

Epithelial Type Location (lining) Function Simple Squamous Air sacs of lungs, blood vessels lubrication Stratified Squamous Skin, mouth... Lunrication, protection Simple Columnar Stomach, intestines, uterus Protective, SA, secrete mucus Pseudostratified Columnar Trachea, fallopian tubes movement Stratified Columnar Vas deferens, male urethra Support & some movement Simple Cuboidal Ovaries, kidneys, thyroid glands Secretion & absorption Stratified Cuboidal Mammary glands, sweat glands, Secretion & absorption & protections Transitional

Transitional Tissue Transitional Stretched Unstretched

Epithelial Type Location (lining) Function Simple Squamous Air sacs of lungs, blood vessels lubrication Stratified Squamous Skin, mouth... Lunrication, protection Simple Columnar Stomach, intestines, uterus Protective, SA, secrete mucus Pseudostratified Columnar Trachea, fallopian tubes movement Stratified Columnar Vas deferens, male urethra Support & some movement Simple Cuboidal Ovaries, kidneys, thyroid glands Secretion & absorption Stratified Cuboidal Mammary glands, sweat glands, Secretion & absorption & protections TransitionalBladder Stretch, protection against seepage

Tissue Identification

Epithelial Tissues Concept Map Squamous Columnar Cuboidal location type location function location type location function Transitional

What are tissues? Groups of cells that are specialized in function or structure Groups of cells that are specialized in function or structure What are the four types? What are the four types?EpithelialConnectiveMuscleNervous

Connective Tissue Fucntions Fucntions “connects” substances “connects” substances Protect Protect Act as frame Act as frame Fill spaces Fill spaces Produce blood Produce blood Repair tissue damage Repair tissue damage

Connective Tissue Make a table in your notes like this: (7 X 3) Make a table in your notes like this: (7 X 3) Connective Tissue Type Location (lining) Function

Connective Tissue Types Loose Fibrous Loose Fibrous Contains elastin Contains elastin Connects skin to organs Connects skin to organs Provides blood vessels to skin Provides blood vessels to skin Fills muscle gaps Fills muscle gaps

Connective Tissue Type Location (lining) Function Loose Fibrous Under skin, in muscle Nourishment, stretch

Connective Tissue Types Adipose Adipose Similar to loose fibrous Similar to loose fibrous Contains fat storage Contains fat storage Insulation, cushions joints, energy reserve Insulation, cushions joints, energy reserve Fat droplet

Connective Tissue Type Location (lining) Function Loose Fibrous Under skin, in muscle Nourishment, stretch Adipose Spaces throughout body Insulation, cushioning

Connective Tissue Types Dense Fibrous Dense Fibrous Contains elastin Contains elastin Very strong (dense) Very strong (dense) Slow tissue repair Slow tissue repair Protection Protection

Connective Tissue Type Location (lining) Function Loose Fibrous Under skin, in muscle Nourishment, stretch Adipose Spaces throughout body Insulation, cushioning Dense Fibrous Ligaments & Tendons Pulling/pushing, forces

Connective Tissue Types Cartilage Cartilage Partly rigid, partly flexible Partly rigid, partly flexible Elastic(ears) Elastic(ears) Hyaline(bone ends) Hyaline(bone ends) Fibro-(backbone) Fibro-(backbone) Hyaline

Connective Tissue Types Elastic CartilageFibrocartilage

Connective Tissue Type Location (lining) Function Loose Fibrous Under skin, in muscle Nourishment, stretch Adipose Spaces throughout body Insulation, cushioning Dense Fibrous Ligaments & Tendons Pulling/pushing, forces Cartilage Ears, nose, bone ends Cushion, support

Connective Tissue Types Bone Bone Supports organs Supports organs Attachment point Attachment point Bone cells are called osteocytes. Bone cells are called osteocytes. Well nourished Well nourished

Connective Tissue Type Location (lining) Function Loose Fibrous Under skin, in muscle Nourishment, stretch Adipose Spaces throughout body Insulation, cushioning Cartilage Ears, nose, bone ends Cushion, support Dense Fibrous Ligaments & Tendons Pulling/pushing, forces BoneSkeleton Support, protection

Connective Tissue Types Blood Blood Red & white blood cells Red & white blood cells Platelets Platelets Plasma Plasma Regulates temperature Regulates temperature Transportation system Transportation system

Connective Tissue Type Location (lining) Function Loose Fibrous Under skin, in muscle Nourishment, stretch Adipose Spaces throughout body Insulation, cushioning Cartilage Ears, nose, bone ends Cushion, support Dense Fibrous Ligaments & Tendons Pulling/pushing, forces BoneSkeleton Support, protection Blood Veins, arteries, heart transport

Muscle Tissue Cardiac (involuntary) HEART Cardiac (involuntary) HEART Smooth (involuntary) ORGANS Smooth (involuntary) ORGANS Skeletal (voluntary) BONES Skeletal (voluntary) BONES Smooth MuscleCardiac MuscleSkeletal Muscle

Nerve Tissue Found in the brain, spinal cord, and peripheral nerves Found in the brain, spinal cord, and peripheral nerves Conducts electrochemical impulses Conducts electrochemical impulses Basic cell is called a NEURON Basic cell is called a NEURON

What is tissue regeneration? Tissue can be manmade in a lab Tissue can be manmade in a lab Tissues are made from embryoic stem cells Tissues are made from embryoic stem cells Totipotent Totipotent 500 cell size embryos 500 cell size embryos Research is being done with adult stem cells (taken from bone marrow), but so far is unsuccessful Research is being done with adult stem cells (taken from bone marrow), but so far is unsuccessful

What can tissues do? Help burn victims (epithelial) Help burn victims (epithelial) Repair muscle Repair muscle Repair organs (heart, liver) Repair organs (heart, liver) Repair nerves/brain/spine Repair nerves/brain/spine Build bone (osteoporosis) Build bone (osteoporosis) Help heal bone Help heal bone ALS, MS, Parkinsons, etc, etc ALS, MS, Parkinsons, etc, etc