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31 Cards in this Set
- Front
- Back
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What are the four basic tissue types?
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Epithelia, Connective, Muscle, and Nervous
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Funtion of Epithelia Tissue?
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Protection, Absorption, and Secretion
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Function of Connective Tissue
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Support, Bind, and Defend.Speacialized cells
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Function of Muscle Tissue
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contraction, movement, and bodily secretion
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Function of Nervous Tissue
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All cells provide communication between other tissues
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5 characteristics of Epithelium
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1. Limited intercelluar space-close together
2. Single of multi layer of cells 3. Free apical surfaces-opposite of basement membrane 4. Avascular- lack blood vessels 5. Mitotic capability-repair and divides |
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3 key criteria for naming epithelia
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1. # of cell layers
2. cell shape 3. suface modifications |
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surface modifications
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Cilia, microvilli
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Connective Tissue distinct from Epithelial
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Connective: extracellular matrix, vessels
Epithelial- intercellular(tight) no vessels |
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3 groups of Connective Tissue
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1. Fluids-blood and lymph
2. Connective Tissue Proper- protection (dense and loose) 3. Supportive: bone and cartilage |
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6 functions of connective tissue
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1. form the structural framework (bone,cartialge)
2. transport nutrients & waste (blood and lymph) 3. provide protection for vital organs (adipose, bone cartilage) 4. provide support and interconnections (tendons and ligaments) 5. insulate, store E and produce important cells of blood ( adipose) 6. Contribute to body defense and repair (blood, lymph) |
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2 components make up extracellular matrix
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1. protein fibers
2. groud substances (speacialized cells) |
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Loose Connective Tissue
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1. areolar
2. adipose (fat) 3. reticular |
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Dense Connective Tissue
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1.Regular Fibrous
2irregular fibrous 3. regular elastic |
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Supportive Connective Tissue-BONE
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protective structures, strong, durable, non-elastic collagen, movement
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Supportive Connective Tissue-CARTILAGE
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durable yet flexible, ex)nose and ear
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Special Feature of Muscle tissue
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specialized for contraction, possesing the ability to shorten and there for create a contractive force for MOVEMENT
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4 functions of Muscle Tissue
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1. support and movement
2. propulsion of blood through vessels 3. movement of food or body sercretion 4. thermoregulation |
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3 types of muscle tissue
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1. striated-voluntary
2. smooth-involuntary HOLLOW ORGANS 3. cardiac- involuntary HEART |
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voluntary vs. involuntary
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voluntary:controlled movements
involuntary: autonomic nervous system..automatic |
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Primary function of Nervous Tissue
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communication network w/ other tissues
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sensory vs. motor nerves
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sensory- transmt to CNS (INPUT)
motor- send output to effectors from CNS(OUTPUT) |
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Components of Central Nervous System
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brain and spinal cord
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Peripheral Nervous System
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cranial nerves-12
spinal nerves |
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3 types of neurons
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1. multipolar-most common
2. bipolar- found in special senses 3. unipolar- in dorsal root ganglia |
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Soma (cell body)
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houses the nucleus
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Dendrite
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*afferent- receives info
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Axon
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efferent- sends signal to other tissues, myelinated
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Myelin
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Speedsup process, insulates axon
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Schwann Cell
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myelin sheath is a product of a neuroglial cell
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Node of Ranvier
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exposed membrane along the axons
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