Unit 06 The Integumentary System Write

Pre-requisite knowledge Organ: One or more tissues working together to complete one or more specific functions Organ System A group of organs working together to complete one or more specific functions Listen

Unit 06 Latin Root WordsPrefix- Root or -SuffixDefinition CutaneousRootSkin DermisRootSkin PapillaryRootNipple or swelling FollicleRootLittle bag Kerat-PrefixHorn Melan-PrefixBlack Seb-Prefixoil or grease Sub-PrefixBelow IntegumentRootCovering StratumRootLayer A day: Quiz on Friday 11/20/2015 B day: Quiz on Monday 11/23/2015 Write

6.1 Introduction Write

6.1.1 I know the organs that constitute the integumentary system Write

Listen

Organs of the Integumentary System Skin Hair Nails Accessory Organs example: Sweat Glands Write

6.1.1 I know the major functions of the integumentary system Write

Listen

Integumentary System Functions 1.Protective Covering 2.Water Regulation 3.Heat Regulation 4.Sensory Reception 5.Waste Excretion 6.Creates Vitamin D Write

6.2.1 Types of Membranes Describe the four types of membranes Write

Serous Membranes Listen

Serous Membranes Listen

Serous Membranes Listen

Serous Membranes Listen

Mucous Membranes Listen

Mucous Membranes Listen

Synovial Membranes Listen

Synovial Membranes Listen

Cutaneous Membrane Listen

Types of Membranes Function: Where: Tissue Composition Fluid: Function: Where: Tissue Composition Fluid: Function: Where: Tissue Composition Fluid: Function: Where: Tissue Composition Fluid: Serous Membranes Reduce friction between organs Around Organs Simple Squamous Epithelium and Loose Connective Tissue Serous Fluid Pericardial = Heart Pleural = Thoracic (lungs) Peritoneal = Abdominal) Mucous Membranes Lines cavities and tubes that open to the outside of the body. Ex: oral and nasal cavities Epithelium (usually simple columnar or psuedostratified) over a loose connective tissue Mucous Synovial Membranes Joints Dense connective tissue overlaying loose connective and adipose tissue Synovial Fluid Cutaneous Membrane (Skin) Entire Body Multiple Sweat and Sebum Keeps tissues soft, traps bacteria dust and pollen Lubricates Joints Protective Covering + water and heat regulation Write

Content Check 1.____Found in the respiratory and digestive tracta. Serous Membrane 2.____ Covers the entire bodyb. Mucous Membrane 3.____ Found around organs and body cavitiesc. Synovial Membrane 4.____ Keeps tissues soft and traps bacteriad. Cutaneous Membrane 5.____ Usually composed of simple columnar or pseudostratified epithelial tissue with goblet cells 6.____ Reduces friction between organs 7.____ Found around your joints 8.____ Composed of simple squamous epithelium and loose connective tissue 9.____ Acts as a protective covering against external elements such as heat and dehydration 10.____ Composed of multiple tissue types Answer B D A B B A C A D D

6.3 Skin and Its Tissues Write

6.3.1 Objective I know the three layers of the skin Write

Analyze

Dermis Epidermis Subcutaneous Layer Or Hypodermis Arterial Capillary Venous Capillary Nerve Erector Pilli Muscle (goosebumps) Sweat Gland Hair Follicle Adipose Tissue (Fat) Draw and Write Sebaceous Gland

The Three Layers of Skin Epidermis (above dermis) Dermis (middle Layer) Hypodermis or Subcutaneous Layer (below Dermis) Write

Content Check 1.What are the three layers of the skin? 2.Which layer is closer to the outside of the body? 3.Which layer is in the middle? 4.Which layer is below the dermis? 5.What are some structures you would find in the dermis layer of the skin? 6.Why would the body store fat in the skin? Answer

Interesting Fact: If the skin of a 150-pound person were spread out flat, it would cover approximately 20 square feet.

Directions Label and Color your Skin Study Guide

6.3.2 Objective I know the type of tissue that makes up the epidermis and can identify its five layers.

Dermis Stratum Basale (base layer) Stratum Spinosum (Cells become spiny) Stratum Granulosum (Begin to see Keratin Granules) Stratum Lucidum (Clear Layer found only in thick skin i.e. palms of hands Stratum Coreum (Dead layers of keratin filled skin cells) Basement Membrane Free Surface Stratified Squamous Epithelium

Layers of the Epidermis Stratum Corneum Stratum Lucidum Stratum Basale Stratum Spinosum Stratum Granulosum Stratum Basale Bottom Layer Living Cells Supplied with blood reproduce Stratum Spinosum Cells become spinous Keratin Build up Living Cells Stratum Granulosum Can begin to see the keratin granules Dying Cells Stratum Lucidum Only found in palms and soles Creates Thick Skin Dead Cells Stratum Corneum Many layers of dead cells Write Tissue: Stratified Squamous Epithelium

Content Check 1.What kind of tissue is the epidermis composed of? 2.From bottom to top, what are the five layers of the epidermis? 3.Which layer of the epidermis undergoes cellular division? Answer

6.3.3 Objective I can describe the function of the epidermis

Epidermis Function Protection from external environment Prevent Water Loss Regulate Body Temperature Skin Color Write

6.3.4 Objective I understand the process of Keratinization Write

Keratinization Keratin A tough, fibrous, and water-proof protein found in the cells of the epidermis, hair and nails Write

Keratinzation Keratinization The process of filling the uppermost layers of the epidermis with Keratin Keratinocyte (Keratin producing Cell)

Homework Collection Your Protein Synthesis paragraph is due to today. Please turn it into the basket. If you have not finished it, you may still turn it in at a later date, however, a zero will be placed in the grade book until it is turned in. It will also be marked as late. There is no penalty, it is for information only.

Epidermis Content Check Get out a piece of paper and put away your notes. Write a paragraph describing the structure and function of the epidermis. Make sure to include the tissue type, the layers and what they do as well as the process of keratinization. Feel free to add labeled pictures or diagrams.

Epidermis Content Check Tissue: Stratified Squamous Epithelium 5 Layers Stratum Basale: Living/reproduces Stratum Spinosum: Living/ Spiny shaped/ making keratin Stratum Granulosum: Dying/ Full of Keratin Granules Stratum Lucidum: Dead/clear layer/only found in thick skin Stratum Corneum: Dead/Full of keratin Keratinzation: process of filling cells of the epidermis with keratin Function: water/temp regulation and protection

6.3.5 Objective I can explain how skin gets its color as well as factors that can change its color.

Listen

Skin Color Melanocyte Cell that creates melanin Located towards the stratum basale Stimulated by the sun (tan) Cytoplasmic extensions to other layers of the skin Melanocyte and melanin production controlled by your genes Melanin A pigment that deflects UV rays Used to protect other cells Write

What are freckles?

Listen

Factors that can influence Skin Color Sunlight, UV and X-rays Tanning Blood Supply Blushing, inflammation Lack of Oxygen in blood Cyanosis (turning blue) Diet Carotene yellow in vegetables Silver = blue skin Liver Disease Jaundice (build up of bilirubin turns skin yellow) Write

6.3.6 Objective I can describe the structure and function of the dermis

Dermis Venous Capillary Sweat Gland Hair Follicle Sebaceous Gland Papillary Layer Arterial Capillary Erector Pilli Muscle (goosebumps) Nerve Dense Connective Tissue Listen

Dermis Structures and Functions Tissue composition Dense connective tissue Structures Dermal Papillae Creates fingerprints Blood vessels Supply nutrients Regulate body temperature Nerve Cells Sensory reception Control of glands and erector pili muscle Hair follicles Hair Growth Sebaceous glands Secrete oils (sebum) Sweat Glands Secrete sweat Write

Listen

Loop Radial Loop – loop points to radius (thumb) Ulnar Loop – Loop Points to Ulnar (Pinky) Arch Whorl Listen

Fingerprint Activity Directions Get out a scratch piece of paper. Roll your fingerprints and see what type of fingerprint your papillary layer has created.

6.3.7 Objective I can describe the structure and function of the subcutaneous layer

Listen

Dermis Structures and Functions Tissue composition Loose connective tissue Adipose tissue Structures Blood vessels Nutrient supply Nerves Sensory Write

6.4 Accessory Organs

6.4.1 I can describe the structure and function of hair

Hair Follicles FunctionProtection Sensory reception PartsHair Follicle: tube-like depression Hair Papilla: Contains the cells that create hair Arrector Pili Muscle: lifts hairs (goosebumps)

6.4.3 I can describe the structure and function nails

Hair Follicles FunctionProtective Coverings PartsLunula: active growing region of the nail Eponychium (cuticle): thickened skin that protects the nail from infection

6.4.2 I can describe the structure and function sebaceous glands

Sebaceous Glands FunctionSecrete sebum (or oil) PartsJust the gland

6.4.4 I can describe the structure and function sweat glands

Sweat Glands FunctionSecrete Sweat) PartsEccrine glands: respond to temperature Apocrine glands: respond to emotional distress

6.5 Regulation of Body Temperature

Reading Assignment Read 6.5 Regulation of Body Temperature Take notes Write and answer the check your recall questions in your notes. Read 6.6 Healing of Wounds Take notes Write and answer the check your recall questions in your notes When you are done, pick up a Unit 06 Review and work on that for the rest of the period.

6.6 Healing of Wounds

Common Skin Disorders