1. HISTOLOGY
A&P 1

2. TISSUES
Tissues - collections of similar cells working together to perform a function
Tissue classification based on structure of cells, composition of noncellular extracellular matrix, and cell function
Major types of adult tissues
Epithelial
Connective
Muscle
Nervous

3. EPITHELIAL TISSUE Cellularity - Consists almost entirely of cells
Covers body surfaces, lines hollow organs, and forms glands
Outside surface of the body
Lining of digestive, respiratory and urogenital systems
Heart and blood vessels
Linings of many body cavities
Has apical and basal surfaces
Rests on a basement membrane
Specialized cell contacts bind adjacent cells together
Avascular - no blood vessels
Regenerative -Replaces lost cells by cell division

4. What is this???? What is the name of these types of cells?
Where would I find it?
What might be its function?
SIMPLE CUBOIDAL
KIDNEYS
SECRETION and ABSORPTION

5. Name this tissue type… What is the name? Where is it located?
What is its function?
Transitional
Bladder, ureters, urethra
Provides stretch

6. Name this tissue type… What is the name? Where is it located?
What is this an image of?
Bowman’s capsule (glomerulus of kidneys)
Glomerulus
Simple cuboidal
tissue layer
Simple squamous tissue layer
What is the name?
Where is it located?
What is its function?
Simple squamous
Alveoli of lungs, kidney glomeruli, lining of vessels
Filtration (kidneys), diffusion (air sacs of lungs)

7. Name this tissue type… What is the name? Where is it located?
What is its function?
Simple columnar
Intestinal tract
Absorption, secretion of mucus, enzymes, and other substances

8. Name this tissue type… What is the name? Where is it located?
These structures are…
cilia
This is a _______
Cell?
goblet
What is the name?
Where is it located?
What is its function?
Pseudostratified Ciliated Columnar
Trachea and bronchial tubes
Secretion of mucus, propulsion of mucus by cilia

9. Name this tissue type… What is the name? Where is it located?
What is its function?
Stratified squamous
Lines mouth, vagina, esophagus, skin
protection

10. STRATIFIED SQUAMOUS Specific types
Keratinized – contain the protective protein keratin
Surface cells are dead and full of keratin
Non-keratinized – forms moist lining of body openings

11. CONNECTIVE TISSUE Most diverse and abundant tissue Main classes
Connective tissue proper
Cartilage
Bone tissue
Blood
Characteristics
Varying degrees of vascularity
Nonliving extracellular matrix, consisting of ground substance and fibers
Cells are not as abundant nor as tightly packed together as in epithelium

12. FUNCTIONS OF CONNECTIVE TISSUE
Enclose organs as a capsule and separate organs into layers. Areolar
Connect tissues to one another. Tendons and ligaments.
Support and movement. Bones.
Storage. Fat.
Insulation. Fat.
Transport. Blood.
Protection. Bone, cells of the immune system

13. CELLS OF CONNECTIVE TISSUE
Fibroblasts - secrete the proteins needed for fiber synthesis and components of the extracellular matrix
Adipose or fat cells (adipocytes). Common in some tissues (dermis of skin); rare in some (cartilage)
Mast cells. Common beneath membranes; along small blood vessels. Can release heparin, histamine, and proteolytic enzymes in response to injury.
Leukocytes (WBC’s). Respond to injury or infection
Macrophages. Derived from monocytes (a WBC). Phagocytic; provide protection
Chondroblasts - form cartilage
Osteoblasts - form bone
Hematopoietic stem cells - form blood cells
Undifferentiated mesenchyme (stem cells). Have potential to differentiate into adult cell types.

14. Extracellular Matrix ECM has 3 major components Protein fibers
1. Protein fibers Ground substance Fluid
Protein fibers
Collagen fibers. Composed of the protein collagen. Strong, flexible, inelastic; great tensile strength (i.e. resist stretch). Perfect for tendons, ligaments
Elastic fibers. Contain molecules of protein elastin that resemble coiled springs. Returns to its original shape after stretching or compression. Perfect for lungs, large blood vessels
Reticular fibers. Formed from fine collagenous fibers; form branching networks (stroma). Fill spaces between tissues and organs.

15. Name this tissue type… What is the name? Where is it located?
What is its function?
Adipose
Under the skin, around the eyes, kidneys, heart.
Protection, storage

16. Name this tissue type… What is the name? Where is it located?
Fibers?
Reticular
Cells?
lymphocytes
What is the name?
Where is it located?
What is its function?
Reticular (Loose) Connective Tissue
Internal skeleton: lymph nodes, spleen
Soft internal skeleton, supports other cell types

17. Name this tissue type… What is the name? Where is it located?
What are these cells called?
chondrocytes
What is the name?
Where is it located?
What is its function?
Hyaline.
Embryonic skeleton, cover end of bones, trachea, nose, larynx
Support, reinforce, resist compressive stress.

18. Name this tissue type… What is the name? Where is it located?
Fiber?
Collagen
Fiber?
Elastic
Cell?
What is the name?
Where is it located?
What is its function?
Aerolar Loose connective .
Fibroblast
Widely distributed under epithelia
Wraps and cushions organs; inflammation.

19. Name this tissue type… What is the name? Where is it located???
Fibroblasts ??
Collagen
What is the name?
Where is it located?
What is its function?
Dense Connective Tissue.
Tendons, ligaments, aponeurosis
Attaches muscles to bones, bones to bones.

20. Name this tissue type… What is the name? Where is it located?
1. Haversian Canal
2. Canaliculi
3. Lamella
4. Osteocytes in the Lacuna
What is the name?
Where is it located?
What is its function?
Osseous tissue.
Bones
Storage, support

22. What tissue is this? Where is it found? What is its function??? ?? ??
What important process takes place here?
hematopoiesis
What tissue is this?
Where is it found?
What is its function?
Spongy bone or cancellous bone
In the center of flat bones and in the ends of long bones
Support

23. P p

24. MUSCLE TISSUE Characteristics Types Cells are referred to as fibers
Contracts or shortens with force when stimulated
Moves entire body and pumps blood
Types
Skeletal:attached to bones
Cardiac: muscle of the heart.
Smooth: muscle associated with tubular structures and with the skin. Nonstriated and involuntary.

25. P p
SKELETAL

26. P p
CARDIAC

27. P p
SMOOTH MUSCLE

28. P p
NERVOUS

29. Layers of skin