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Unit 3

A&P

QuestionAnswer
Characteristics of a muscle 1.Contraction :reduce space. 2.Excitability/ Irritability: respond to stimuli 3.Extensibility: ability to stretch 4.Elasticity: ability to return to original length when relaxed)
Muscles Fatigue & Cramping (What cause this) Lactic acid changes in electrolyte concentration
Muscle types and characteristics of each how are they named Skeletal: Striated,Voluntary, Attach 2bones, move skeleton Cardiac:Striated,Involuntary,Heart,Pumping action of heart Muscle: Non Striated,Involuntary, Wall organs, Controls involuntary organs
Sphincter Ring/like,Openings,Walls, Controls passage of substances
Steps in muscle contraction (Actin, myosin, ACH, Ca+, tropomyosin, troponin) (1) Relaxed muscle. (2) When the calcium ion concentration in the cytosol rises, binding sites on thin filaments become exposed, and (3) myosin heads bind to the actin, forming cross-bridges. (4) Upon binding to actin, myosin heads spring from the cocked
Meninges 3 Connective Tissues , Pia matter-inner/ Dura matter-outer/ Arachnoid matter-middle
All parts of the brain and CSF Cerebrum,Diencephalon,Cerebellum, Brainstem 1Pons 2Midbrain 3Medulla Oblongata
Lobes of cerebrum and functions Frontal lobe:Concentration, planning, problem solving, Parietal lobe: |Temp,touch,pressure and pain of skin Temporal lobe:Hearing Occipital lobe:Vision Insula (Island of Reil):Process taste information
How many Cranial nerves do we have 12 Cranial nerves, On Occasions Our Trusty Truck Acts Funny,Very Good Vehicle Any How (
What are the divisions of nervous system Central Nervous System Brain and Spinal Cord Peripheral Nervous System Sensory and Motor
Fight or flight vs rest and digest Fight or flight ( Sympathetic ) Rest and Digest ( Parasympathetic)
Neuron composition function Cell Body Dendrites Axons
Neurons communicate with each other at Synapse
A liquid that nourishes the brain. Also it baths the brain and spinal cord. Cerebrospinal Fluid (CSF)
31 pairs Spinal Nerves
When impulse reaches synaptic knob of an axon, are released by exocytosis Neurotransmitter
A gland that surrounds the neck of bladder Prostate Gland
Created by: ADAMOO0026
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