Term
|
Definition
| Requires oxygen to generate ATP. 15x more efficient than anaerobic |
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Term
|
Definition
| Bind with troponin-tropomyosin ions to unblock binding sites |
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Term
| pulmonary semilunar valve |
|
Definition
| prevents backflow into the right ventricle |
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Term
|
Definition
| gives blood to the myocardium |
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Term
|
Definition
| thick muscle layer surrounding the heart |
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Term
| Isovolumetric Ventricular Relaxation |
|
Definition
| ventricular begins to relax, the pressure goes down. Semilunar valves are closed |
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Term
| Recruitment in skeletal muscle |
|
Definition
| increasing the number of motor units participating in contraction |
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Term
|
Definition
| Aortic and Pulmonary valves are closing. |
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Term
|
Definition
| contracts and blood flows from the atrium to the ventricle |
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Term
|
Definition
| located between the right atrium and right ventricle. prevents backflow |
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|
Term
| all parasympathetic targets |
|
Definition
| have muscarinic repceptors |
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|
Term
| Conversion of ADP and Creatin phosphate |
|
Definition
| Quick skeletal use (fast) does not require oxygen. converts into energy |
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Term
|
Definition
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Term
|
Definition
| short bursts of speed and power |
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Term
|
Definition
| Stroke volume of the heart increases in response to an increase in the volume of blood filling the heart |
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Term
|
Definition
| Average blood pressure - average arterial pressure during a single cardiac cycle |
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Term
|
Definition
| reserve supply of oxygen in muscle cells |
|
|
Term
Skeletal muscle contraction bands
DO NOT CHANGE LENGTH |
|
Definition
|
|
Term
Skeletal muscle contraction bands
DO CHANGE LENGTH |
|
Definition
| distance between Z lines, I bands |
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|
Term
| 2 main molecules used as metabolic fuel |
|
Definition
|
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Term
|
Definition
| transmit the action potential deep into the muscle fiber |
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Term
|
Definition
| permitting the exchange of nutrients and gases between the blood and the tissue cells |
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Term
|
Definition
| constant, low-level state of contraction in muscles |
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Term
|
Definition
binding of norepinephrine and epinephrine to beta-a receptors
(sympathetic nervous system) |
|
|
Term
| Pressure of atria > pressure of vent |
|
Definition
| atrioventricular valves open |
|
|
Term
| Myosin head shifts from low energy to high energy |
|
Definition
| when ATP breaks down into ADP and Pi |
|
|
Term
| Give an example of a receptor, action, and target |
|
Definition
| nicotinic, muscle contraction, skeletal muscle |
|
|
Term
|
Definition
| Take a vasodilator medication |
|
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Term
|
Definition
| ATPase, binds to the uncovered binding sites. binds to actin. ATP binds to myosin and moves it back to it's "cocked in" position. moves the muscle. |
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Term
|
Definition
| neurotransmitter in both the PNS and CNS. Excitatory. Binds to ACh receptors to open gated sodium channels in the cell membrane |
|
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Term
|
Definition
| Regulates interactions b/w actin and myosin in the sarcomere and regulates muscle contraction. unblocks the binding sites |
|
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Term
|
Definition
| Binds to troponin which changes its shape exposing binding sites for myosin on the actin filaments |
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Term
|
Definition
| binds to troponin and then is actively pumped back into the sarcoplasmic reticulum |
|
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Term
|
Definition
|
|
Term
|
Definition
|
|
Term
| #1 Step in a Contraction Cycle |
|
Definition
| ACh is released from somatic motor neuron; binds to nicotinic receptors on motor end plate |
|
|
Term
| #2 Step in a Contraction Cycle |
|
Definition
| Action Potential is generated and is propagated along sarcolemma into T-tubules |
|
|
Term
| #3 Step in a Contraction Cycle |
|
Definition
| Calcium is released from sarcoplasmic reticulum and binds to troponin |
|
|
Term
| #4 Step in a Contraction Cycle |
|
Definition
| Myosin crossbridges form and perform power stoke |
|
|
Term
| #5 Step in a Contraction Cycle |
|
Definition
| Calcium is actively reabsorbed into sarcoplasmic reticulum and fiber relaxes |
|
|
Term
| possible neurotransmitters |
|
Definition
|
|
Term
|
Definition
| nicotinic, muscarinic, alpha-1, beta-1, beta-2 |
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Term
|
Definition
| smooth muscle cells of the heart that contract |
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