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ANA 113: Exam 1
What is histology?
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The study of tissues
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Functions of Membranous Epithelium
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*Protection
*Lines body cavities
*Contains cells for sensory perception
*Absorption and secretion
*Filtration
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What is keratin?
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Cells that contain a tough waterproof protein.
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Endocrine Glands
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Secretes hormones directly into the bloodstream.
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Exocrine Glands
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Secrete their products through a duct to the site of action
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Goblet Cell
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Unicellular exocrine gland that produces mucous.
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Location of simple squamous epithelium
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Blood Vessels
Alveoli
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Location of simple cubodial epithelium
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Glands
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Location of simple columnar epithelium
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Stomach
Intestines
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Location of stratified squamous epithelium
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Skin, mouth, anus, vagina, esophagus
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Location of Pseudostratified Ciliated Columnar Epithelium
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Nasal Cavity
Trachea and Bronchi
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Location of Transitional Epithelium
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*Bladder
*Uterus
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4 Types of Connective Tissue
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Connective Tissue Proper
Cartilage
Bone
Blood
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Macrophages
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Engulf Bacteria
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Location of Loose ( Areolar) Connective Tissue
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Packaging material around organs
Binds skin to underlying muscle
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Location of Dense Connective Tissue
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Ligaments
Tendons
Outer covering of the eye
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Elastic CT location
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Walls of arteries
Larynx
Trachea
Bronchi
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Adipose CT
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Composed of Fat cells, found throughout the body.
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Hyaline Cartilage Locations
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Nose
Trachea
Bronchi
Ends of ribs
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Fibrocartilage Locations
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Intervetebral Disc
Symphysis Pubis
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Elastic Cartilage Locations
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Auditory (Eustachian) Tube
External Ear
Larynx- Epiglottis
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Epidermis
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30-50 layers
Composed of stratified keratinized squamous epithelium
Outermost layer of skin
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Dermis
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Deep to the epidermis
BV& Glands found here
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Hypodermis
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Subcutaneous Layer
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Functions of the skin
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1.Protection
2. Thermoregulation
3. Absorption
4. Excretion
5.Synthesis
6.Sensation
7.Communication
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5 Layers of the Epidermis
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1. Stratum Germinativum (Basale)
2. Stratum Spinosum
3. Stratum Granulosum
4. Stratum Lucidum
5. Stratum Corneum
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Friction Ridges
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Elevations on epidermal surface that are genetically determined and help grasp objects.
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3 Pigments that effect skin color
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*Melanin
*Carotene
*Hemoglobin
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Cyanosis
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Blueish coloration due to poorly oxygenated blood
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Skin Tone
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Strength and resiliency caused by elastic and collagenous fibers of dermis
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Sebaceous Glands- Structure,Location,Function
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Rupture to release their contents.
Found all over the body except for palms of hand and soles of feet.
Produce sebum, an oily substance that lubricates the hair shaft.
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Sweat Glands
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Tubular glands with a duct.
Two types eccrine and apocrine.
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Eccrine Glands
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Present from birth
Regulated by ANS
Produce "sweat" consisting mostly of water, salt, and waste such as urea.
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Apocrine Glands
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Begin at puberty.
Secrete sweat and lipoprotein which produce odors
Located in axillary and anogenital regions.
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