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Related Flashcards
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Cards In This Set
| Front | Back |
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-Sensory Neuron
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A nerve cell that sends electrical impulses from muscle to brain
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-Motor Neuron
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A nerve cell that sends slectrical signals from brain to the muscles.
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-Motor Unit
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The motor neuron that stimulates muscle fibres (The more there are, the more force)
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-All or Nothing Principle
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Electrical impulses reach threshold muscle fibres contact simultaneously with max force. Unless threshold is reachednone will contract.
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Process of Contaction
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See A3 sheet of Notes
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Cardiovascular system
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To pump blood to the lungs and around body (O2 and Nutrients)
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Stroke Volume
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Measures how much blood is squeezed through Aorta
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Cardiac Output
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Is the amount of blood pumped out of heart Per Min
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4 Syages of Cardic cycle
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-Atriole diiastole
-Ventricular diastole -Atriole systole -Ventricular Systole |
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3 Functions of Blood
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-Transportation of Gases, Fuels and minerals. Removes CO2, Transports glucose and removes lactate
-Protection against infection and dehydration -Maintaining equalibrium via enzyme and hormone regulation. Regulates body Temp. |
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4 Components of blood
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-Plasma
-White blood cells -Red blood cells -Platelets |
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Blood Vessels
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-Artteries Transport blood away from heart
-Atrioles -Capillaries Pulmonary diffusion takes place here -Venules -Veines Transport blood back to heart |
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Precapillary Sphinters
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Are a band of smooth muscles that direct blood flow in to capiliaries
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What is the Respiratory system?
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System composed of mouth, nose, airways and lungs which assist breathing.
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What is Respiratory system used for?
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-Transport air into lungs
-Facilitate Pulmonary diffusion |
