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Study Stack 6-12

QuestionAnswer
What are the three primary layers of the integumentary system Epidermis- Protective barrier Dermis- strength and elasticity Hypodermis- insulation and fat storage
What are the main types of skin glands Sebaceous (oil) glands: Produce sebum, lubricate skin/hair. Sudoriferous (sweat) glands: Eccrine (temperature regulation) and apocrine (scent) Ceruminous glands: Produce earwax.
What are the two types of bone formation ? Intramembranous ossification: Forms flat bones (skull, clavicles) Endochondral ossification: Forms most bones; replaces cartilage with bone.
What determines the skin color ? Melanin produced by melanocytes, amount and type determine pigmentation. Carotene and blood flow also influence color.
What are the structural types of joints? Fibrous, cartilaginous, and synovial joints.
What are the three muscle types and characteristics? Skeletal: Voluntary, striated. Cardiac: Involuntary, striated, intercalated discs. Smooth: Involuntary, non-striated.
What is a motor unit? A motor neuron and all the muscle fibers it innervates.
What neurotransmitter triggers muscle contraction? Acetylcholine (ACh) released from motor neurons.
What are the three energy sources for muscle contraction? ATP, creatine phosphate, and cellular respiration (aerobic & anaerobic).
What are the three layers of the meninges? Dura mater, arachnoid mater, pia mater.
What is the function of CSF? Cushions brain/spinal cord, transports nutrients/waste, maintains stable environment.
Created by: Hernandez_95
 

 



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