Term
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Definition
| Phospholipid bilayer surrounding the cell |
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Term
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Definition
| Fluid in middle of cell containing all cellular organelles |
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Term
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Definition
| Genetic library and brain of the cell |
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Term
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Definition
| Outer layer of the nucleus allowing materials in and out of the cell |
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Term
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Definition
| Responsible for RNA synthesis |
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Term
| What are the 4 types of Tissues? |
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Definition
| Epithelial,connective, muscle, and nervous tissue |
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Term
| List the 6 Functions of Epithelial cells |
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Definition
1) protection
2) absorption
3) filtration
4) excretion
5) secretion
6) sensory function |
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Term
| 5 Distinguishing Characteristics of Epithelial Tissue? |
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Definition
1) polarity
2) specialized contacts
3) supported by connective tissue 4) avascular but innervated
5) can regenerate |
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Term
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Definition
| Exposed to the outside of the body or body cavity |
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Term
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Definition
| Where the epithelium attaches to underlying tissue |
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Term
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Definition
| Acts as a filter for molecules diffusing into the epithelial cells from underlying connective tissue |
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Term
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Definition
| A fine network of collagen proteins |
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Term
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Definition
| Reinforces the epithelium and prevent stretching and tearing. Basal lamina + Reticular lamina |
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Term
| Three Elements which Make up Connective Tissue? |
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Definition
| Ground substance, fibers and cells |
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Term
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Definition
| The material that fills the spaces between the cells and contains the fibres |
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Term
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Definition
| Ground substance + Fibers |
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Term
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Definition
| Provide support and are either collagen, elastic or reticular |
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Term
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Definition
| Most numerous and strongest, form numerous cross links to increase their strength |
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Term
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Definition
| Long and thin and allow connective tissue to stretch and recoil |
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Term
| Four Major Types of Blast Cells: |
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Definition
| Fibroblasts, chondroblasts, osteoblasts and hematopoietic stem cells |
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Term
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Definition
| Inflammation, Organization, and Regeneration |
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Term
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Definition
Inflammatory chemicals released
Blood vessels allow white blood cells in
Clotting occurs |
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Term
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Definition
Clot gets replaced by granulation tissue restoring blood flow
Collagen bridges gaps
Surface cells multiply to bridge gap |
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Term
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Definition
| A fully regenerated epithelium results with underlying scar tissues |
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Term
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Definition
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Term
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Definition
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Term
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Definition
| Deepest layer of the skin, composed of adipose tissues |
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Term
| Cell Types in the Epidermis |
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Definition
Keratinocytes
Melanocytes
Merkel cells
Langerhans’ cells |
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Term
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Definition
| deep layers of the epidermis, creating stratum basale |
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Term
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Definition
| Continuously undergo mitosis |
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Term
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Definition
| Cells which contain pigment, found in amongst stratum basale |
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Term
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Definition
| are cells that arise from bone marrow which are responsible for phagocytosis |
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Term
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Definition
| associated with sensory nerve endings and form sensory receptors |
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Term
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Definition
| Layer above Stratum Basale and appear spiny in shape |
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Term
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Definition
| Layer above Stratum Spinosum, flat in shape and contain lamellated Granules which strengthen plasma membranes |
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Term
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Definition
| Only found in thick skin. Consists of a 2-3 layers of flattened dead keratinocytes with indistinct boundaries |
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Term
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Definition
| outermost layer thickest layer, Protects against abrasion, biological, chemical and physical assaults |
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Term
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Definition
| topmost layer of dermis containing collagen and elastic fibers |
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Term
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Definition
| contain capillaries that deliver nutrients to the epidermis |
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Term
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Definition
| Deepest layer of the dermis, consisting of dense irregular tissue |
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Term
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Definition
| melanin, carotene and hemoglobin |
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Term
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Definition
| Pigmentation differences are attributed to the production and retention of melanin even though we all have the same number of melanocytes |
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Term
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Definition
| is a yellow-orange pigment that is usually obtained from the diet |
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Term
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Definition
| Pinkish hue and contributes to colouration of caucasians; little melanin found in the skin |
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Term
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Definition
| Blue skin color: low oxygenation of hemoglobin |
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Term
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Definition
| Fever, hypertension, inflammation, allergy |
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Term
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Definition
| (blanching or pale colour) Anemia, low blood pressure, fear, anger |
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Term
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Definition
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Term
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Definition
| The central core, consists of large cells and air spaces |
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Term
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Definition
| flattened cells surrounding medulla |
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Term
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Definition
| hair follicle has a smooth muscle that contract to form goosebumps |
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Term
| Two Types of Sweat Glands |
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Definition
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Term
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Definition
| Are pores found in the skin and produce sweat directly to the skin |
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Term
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Definition
| glands directly attached to the hair follicle to allow sweat to be secreted to the hair rather than skin. Also not involved in homeostasis, but in pheromone production |
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Term
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Definition
| softens and lubricates the hair and skin and keeps hair from becoming brittle (oil) |
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Term
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Definition
| chrondrocytes encased in small cavities |
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