Term
| circulatory system functions (3) |
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Definition
1. transportation (gases, nutrients, wastes)
2. regulation (hormonal and temp.)
3. protection (clotting, imune) |
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Term
| circulatory system components (2) |
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Definition
| cardiovascular system & lymphatic system |
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Term
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Definition
1. heart: 4 chambered pump
2. blood vessels: arteries, arterioles, capillaries, venules and veins |
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Term
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Definition
| 1. lymphatic vessels, lympoid tissues, lymphatic organs (spleen, thymus, tonsils, lymph nodes) |
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Term
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Definition
1. plasma
2. erythrocytes (RBC)
3. leukocytes (WBC)
4. platelets |
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Term
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Definition
1. plasma proteins: albumin, globulins
2. gamma globulins: antibodies, fibrinogen |
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Term
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Definition
1. carry oxygen
2. lack nuclei
3. 120-day life span
4. contain hemoglobin and transferin |
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Term
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Definition
1. have nuclei and mitochondria
2. granular leukocytes
3. aggranular leukocytes |
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Term
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Definition
1. smallest formed element
2. lack nuclei
3. 5-9 days lived
4. clot blood
5. need fibrinogen |
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Term
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Definition
1. found on the surface of cells
2. help recognize self |
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Term
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Definition
1. secreted by lymphocytes
2. response to foreign cells
3. marker for non-self |
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Term
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Definition
1. antigens on erythrocyte cell surfaces
A - has A antigen
B - has B antigen
AB - has A and B antigen
O - has neither A or B antigen |
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Term
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Definition
1. positive or negative
2. antigen D
3. problems if pregnant mom is negative and baby is positive |
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Term
anticoagulants
(prevent clotting) |
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Definition
1. calcium chelators
2. heparin
3. coumarin |
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Term
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Definition
| 1. located btwn atria and ventricles |
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Term
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Definition
| 1. located btwn ventricles and arteries leaving the heart |
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Term
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Definition
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Term
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Definition
1. systole: contraction
2. diastole: relaxation |
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Term
| sinoatrial node (SA node) |
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Definition
1. pacemaker
2. located in right atrium
3. depolarize spontaneously |
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Term
| electric activity of the heart |
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Definition
1. voltage-gated channels
2. depolarized to threshold by action potentials from the SA node
3. action potentials spread quickly via intercalated discs (gap junctions) |
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Term
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Definition
1. long refractory periods
2. atria and ventricles contract as single units; can't sustain a contraction |
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Term
| electrocardiogram waves (4 phases) |
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Definition
P wave
QRS wave
S-T segment
T wave |
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Term
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Definition
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Term
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Definition
ventricular depolarization
(atrial repolarization) |
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Term
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Definition
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Term
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Definition
ventricular repolarization
(relaxation) |
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Term
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Definition
| 1. slow heart rate, below 60 bpm |
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Term
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Definition
| 1. fast heart rate, above 100 bpm |
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Term
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Definition
flutter: extremely fast (200-300 bpm), but coordinated contractions
fibrillation: uncoordinated pumping btwn atria and ventricles |
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Term
| lymphatic system functions |
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Definition
1. transports excess interstitial fluid from tissues to veins
2. produces/houses lymphocytes for immune response
3. transports absorbed fats from intestines to blood |
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Term
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Definition
1. tonsils
2. thymus
3. spleen |
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