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Haemorrhage (blood loss) is caused by rupture of the vessel wall. This exposes sub-endothelial collagen from within the blood vessel's wall, which attracts blood platelets. Platelets are cell fragments which circulate the bloodstream in an inactive form. Upon binding with the collagen they become activated, changing morphology (shape) and releasing Thromboxane A2 (TXA2) and prostaglandins, which are both chemotractants. These attract other platelets as well as causing vasoconstriction which cause the vessel to constrict. This is in order to maintain a constant blood pressure despite the blood volume decreasing. The platelets aggregate (clump together) and form bonds with each other and the vessel wall, forming a clot. This is initially bound by soluble fibrinogen (), which is then converted into an insoluble gel-like solib substance called Fibrin by Plasim, formed from inactive plasminogen in the plasma converted/activated by 'tissue plasminogen activator'. This fibrin is very stable. Once the clot is no longer needed, the fibrin is broken down by the fibrinolytic system. Hope this helps.
Wiki User
∙ 14y ago
Wiki User
∙ 12y agoIt increases respiratory rate, slows down arterial pressure in order to maintain homeostasis...
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The division of autonomic nervous system that controls the series of physiological responses that are collectively called the fight or flight response.?
Sympathetic division.
What mechanisms or structures are responsible for initiating and controlling these physiological responses?
Sympatho-Adrenal (SA) system and the Hypothalamic-Pituitary-Adrenal (HPA) system.
What are the three important accomplishments of the inflammatory response?
1)external barriers 2)nonspecific responses 3)specific responses
When distantly related life form develop similar trits is it convergent evolution?
Yes, because the environmental pressures are the same evolutionary processes develop similar responses to the same challenges in the environment; similar physiological and behavioral traits.
What is physiological antagonists on effector organs?
Physiological antagonist are those substance that have opposing physiological action but act at different receptors
Can you die by hemoraging?
yes you can die from hemoraging because you can bleed to death
What are physiological responses to sadness?
Physiological responses to sadness can include increased heart rate, changes in breathing patterns, elevated levels of stress hormones such as cortisol, and alterations in brain activity that can impact mood regulation and cognitive function. These responses are part of the body's natural stress response to emotional distress.
What Two major neurotransmitters are involved in regulating physiological responses to exercise?
Acetylcholine and norepinephrine.
The primary hormone responsible for physiological and stress responses such as increased heart rate is?
epinephrine
What has the author Annette Marie Rea written?
Annette Marie Rea has written: 'Physiological responses to repeated bouts of prolonged running' -- subject(s): Physiological aspects, Physiological aspects of Running, Running
How Physiological responses common to most sports injuries?
they just say "well your tough:" and then do surjery
What has the author Anton J Volovsek written?
Anton J. Volovsek has written: 'Physiological responses to changes in exercise' -- subject(s): Exercise for men, Physiological aspects, Physiological aspects of Exercise for men, Physiological aspects of Work, Rest periods, Work
What is the division of the autonomic nervous system that controls the series of physiological responses that are called rest-and-digest?
Parasympathetic.
What is psycho physiological mechanisms of stress?
psychophysiological - conditions/ stress responses that have both mind and body components
What has the author Peter Charles Douris written?
Peter Charles Douris has written: 'Acute physiological responses to speed-specific isokinetic exercise' -- subject(s): Exercise for men, Fatigue, Physiological aspects, Physiological aspects of Exercise for men, Speed
What has the author Kristi Cadwell written?
Kristi Cadwell has written: 'The effects of transdermal nicotine delivery on the cardiovascular responses to exercise' -- subject(s): Cardiovascular system, Exercise, Nicotine, Physiological aspects, Physiological aspects of Exercise, Physiological aspects of Transdermal medication, Physiological effect, Physiology, Transdermal medication
What has the author Paula S Heilman written?
Paula S. Heilman has written: 'Physiological responses obtained during exercise on the StairMaster Gauntlet with and without the use of hands' -- subject(s): Exercise for women, Physiological aspects, Physiological aspects of Exercise for women, Physiological aspects of Step aerobics, Stairs, Step aerobics
