1. Monday, September 19, 2016
Turn Tissue Lab / Tissue Worksheet; put in blue basket
Grab a copy of the Tissue Writing
Get out paper & something to write with.
Get ready to take some notes.

2. Info to know
Thurs. / Fri. – Tissue Quiz; will cover tissue identification & today’s Tissue notes

3. Tissue Writing Due Wednesday
Counts as your Q1 Writing / 10% of your Q1 grade
Must be neat & legible (you may type it up if you wish)
Include a word count (minimum 200 words)
Use proper spelling, grammar, punctuation (complete sentences start w/ capital letter, end w/ period; don’t use 1st person / no “I” or “me” or “we”); points deducted for spelling, punctuation, grammar errors

4. Writing in Science

5. Prompt:
What are the four major tissue types and their chief subcategories? How does the structure of each of the four major tissue types relate to its function?

6. Get ready to copy down the following notes

7. Tissue Notes
Chapter 3

8. Basics Are similar cells organized to carry out a particular function
4 types:
epithelial
connective
muscle
nervous

9. Naming (according to shape and arrangement)
Simple = single layer
Squamous = thin, flat cells
Cuboidal = cube-shaped cells
Columnar = elongated (longer than wide)
Stratified = layered
Pseudo = “false”; looks one way but isn’t
Loose = loosely packed
Dense = tightly packed
Smooth = no striations (ridges / stripes)

10. Epithelial function: protection, secretion, absorption,
Location: body surfaces, cover & line internal organs, compose glands
Lack blood vessels, cells are tightly packed
Types: simple squamous, simple cuboidal, simple columnar, pseudostratified columnar, stratified squamous, stratified cuboidal, stratified columnar, transitional, glandular

11. Endocrine glands Ductless glands
Secretions diffuse directly into the blood
Secrete hormones

12. Exocrine glands Have ducts
Empty their secretions onto the epithelial surface
Examples: sweat glands (sudoriferous), oil (sebaceous) glands, liver, pancreas

13. Types of glands
Merocrine = fluid released; salivary, pancreatic, sweat glands in skin
Apocrine = secretion and part of the cell released; mammary, ceruminous glands (wax producers) in external ear
Holocrine = cell filled with secretion released; sebaceous glands (oil) in skin

14. Connective
Bind, support, protect, fill spaces, store fat, produce blood cells
Found throughout body
Good blood supply (well vascularized); have extracellular matrix (fibers and a ground substance) in between
Types: loose connective, adipose (fat), dense connective, hyaline cartilage, elastic cartilage, fibrocartilage, bone, blood

15. Connective, cont’d Components Fibroblasts = make fibers
Macrophages = carry out phagocytosis
Mast cells = secrete heparin and histamine
Chondrocytes = cartilage cells
Collagenous fiber = provide tensile strength
Elastic = stretches
Reticular = give delicate support

16. Muscle Function = movement
Found attached to bones, in the walls of hollow internal organs and the heart
Muscles contract in response to stimuli
The muscle fibers shorten
Types: skeletal (striated), smooth (lacks striations), cardiac (striated)
Striated = ridges; alternating light and dark cross-markings

17. Nervous
Transmits electrochemical impulses for coordination, regulation, integration and sensory reception
Found in the brain , spinal cord, and nerves
Cells connect to each other and other body parts
Functional characteristics – irritability & conductivity

18. Membranes = 2 types of tissue working together
Serous – line cavities that don’t open to the outside
Line the thorax, and abdomen and cover the organs in these cavities
Mucous = line cavities that do open to the outside
Oral & nasal cavities; line tubes of digestive, respiratory, urinary and reproductive systems

19. Membranes, cont’d
Cutaneous = skin
Synovial = lines joints