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16 Cards in this Set
- Front
- Back
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nerve impulse jumps across ____ to the next axon along its path to the body cell being stimulated (motor nerve) or to the body cell where the impulse originates (sensory nerve)
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synapse
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Nerve impulse speeds over____ per second
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?? chapter 1
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the digestive tract is a ____ long tube from mouth to anus
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9 foot
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components of the digestive system and their basic functions (9)
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mouth- chewing and saliva
-- contains masseter (muscle in jaw, strongest muscle in the body) esophagus- passage to stomach stomach- enzymes pancreas- enzymes gall bladder- enzymes small intestines- absorption liver- conversion and distribution large intestines- waste movement rectum and anus- excretion |
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what cells attack germs?
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white cells
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white cells can be found in (3)
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blood, body fluids, lymph nodes
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lymph nodes swell with ___ and ____ during infection
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millions of extra white cells and dead germs
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tonsils
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destroy swallowed foreign substances
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adenoids
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destroy inhaled foreign substances
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thymus
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gland that shrinks after childhood, responsible for blood cell development
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Spleen
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creates and stores white cells (aka phagocytes which eats germs) and red cells and also cleans and filters blood
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myofibrils are
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actin and myosin or contractile proteins. CONTROLLED damage of these is the key to myofibril growth
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mitochondria
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powerhouse of cell
atp production |
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other cellular components and functions
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CELL MEMBRANE contains DNA in NUCLEUS using MRNA in NUCLEOLUS to take instruction from DNA to RIBOSOMES that manufacture BODY PROTEIN( using available intracelluar amino acids) ribosomes occur in ROUGH SARCOPLASMIC RETICULUM
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what is protein synthesis?
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metabolism of proteins, rebuilding muscle using proteins. creating a scar vs picking a scab from overtraining
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burning sensation indicates rapid cellular energy depletion from
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lactic acid accumulation, caused by high rep resistance training, intense segments of aerobic activity
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