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39 terms

Vocab

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Paracrine Factor
a chemical signal released in an organ that effects cells in the same organ
Cytokin
paracrine factor produced by the immune system
Atheromas
a formation of many plaques in the arteries
Ischemia
lack of blood flow and consequently oxygen to a tissue
Embolus
a moving blood clot
Thrombus
a stationary blood clot
Coronary infarction
death of part of the myocardium
Hemostasis
stopping of bleeding
Petechiae
Little red dot on skin caused by ruptured capillary
Antigonadotropic
causes decrease in amount of LH and FSH
Circadian Rhythm
A rhythm of activity cycles
Photo Period
length of daylight and darkness
Perforin
a chemical that perforates the plasma membrane of a bad cell, released by T-cell
Thymopoeitin
important in the maturation of T-cells
Motor Unit
Each somatic motor neuron and all muscle fibers it innervates
Sarcolema
Plasma membrane of muscle fiber
Bradycardia
Heart rate less than 60 BPM
Tachycardia
Heart rate greater than 100 BPM
Recruitment
The way to generate different tensions in muscle fibers
Innervation Ratio
The amount of muscle fibers innervated by the number of neurons
Summation
Stimulating a muscle to twitch then before it relaxes stimulate it again
Tetanus
When the muscle remains contracted
Eversion
The back flow of blood
Chordae tendinae and Papillary Muscles
Eversion prevented by?
End Systolic Volume
When the ventricles don't pump out all blood, about 45mL
Stroke Volume
The amount of blood during the ejection phase
Heart Murmur
A damaged valve
Mitral stenosis
when the mitral valves become thickened and calcified
incompetent
valves that do not close
Myocyte
another term for a cardiac muscle cell
Ectopic pacemaker
a pacemaker other than the SA node
Sinnus tachycardia
a normal type of tachycardia
Athletes arrhythmia's
normal bradycardia if you are an athlete
Flutter
Heart rate is fast, 200 to 300 BPM, coordinated, can pump blood
Fibrillation
When the chamber of the heart quivers, AP occurring in different parts of the myocardium
AV node block
result of damage to the AV node
Metarteriole
A way for the blood to bypass the capillary bed, connects another ateriole to a venule
Continuous and Fenostrated
Two types of capillaries
Return excess tissue fluid
Major function of the lymphatic system