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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.
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What mechanisms or structures are responsible for initiating and controlling these physiological responses?
The autonomic nervous system regulates physiological responses through mechanisms such as the sympathetic and parasympathetic branches controlling fight-or-flight and rest-and-digest responses, respectively. Hormones like adrenaline and cortisol from the endocrine system also play a role in stimulating and modulating physiological responses to stress or threats. Additionally, the hypothalamus in the brain serves as a central control center for coordinating and initiating these responses.
What is physiological antagonists on effector organs?
Physiological antagonists are substances that have opposing effects on effector organs but do not directly inhibit each other's action. They work by different mechanisms to achieve opposite physiological effects, such as regulating blood pressure or heart rate. This allows for fine-tuning of responses to maintain homeostasis in the body.
What is the relationship between animals' heart rates and their physiological responses to stress?
The relationship between animals' heart rates and their physiological responses to stress is that when animals experience stress, their heart rates typically increase. This is a natural response to the body's fight-or-flight reaction, where the heart pumps more blood to deliver oxygen and nutrients to the muscles needed for a quick response to the stressor. This increased heart rate is a key indicator of the animal's physiological response to stress.
Is a state of being conscious of what is going on whereas is a physiological state of being engaged with the environment.?
Consciousness refers to the mental awareness of oneself and one's surroundings, including thoughts and emotions. Physiological engagement with the environment involves the body's physical interactions and responses to external stimuli. Both consciousness and physiological engagement are essential for overall awareness and functioning in the world.
How does the oyster nervous system function in regulating its physiological processes and responses to environmental stimuli?
The oyster nervous system helps regulate its physiological processes and responses to environmental stimuli by transmitting signals between different parts of its body. This allows the oyster to react to changes in its surroundings, such as temperature or food availability. The nervous system helps coordinate actions like opening and closing its shell, moving towards food sources, and avoiding predators.
Can you die by hemoraging?
yes you can die from hemoraging because you can bleed to death
Difference between physiological and behavioral response?
Physiological responses are automatic bodily reactions to a stimulus, such as changes in heart rate or hormone levels. Behavioral responses, on the other hand, involve actions or movements in response to a stimulus, like running away from a threat or freezing in fear. Physiological responses are often internal and can precede behavioral responses.
What are the examples of psychological and physiological?
Examples of psychological responses include stress, anxiety, and fear. Examples of physiological responses include increased heart rate, sweating, and muscle tension.
Do dead people experience physiological responses such as erections after death?
No, dead people do not experience physiological responses such as erections after death. Erections are a result of blood flow and nerve signals, which cease when a person dies.
What mechanisms or structures are responsible for initiating and controlling these physiological responses?
The autonomic nervous system regulates physiological responses through mechanisms such as the sympathetic and parasympathetic branches controlling fight-or-flight and rest-and-digest responses, respectively. Hormones like adrenaline and cortisol from the endocrine system also play a role in stimulating and modulating physiological responses to stress or threats. Additionally, the hypothalamus in the brain serves as a central control center for coordinating and initiating these responses.
The primary hormone responsible for physiological and stress responses such as increased heart rate is?
epinephrine
What Two major neurotransmitters are involved in regulating physiological responses to exercise?
Acetylcholine and norepinephrine.
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 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 psycho physiological mechanisms of stress?
psychophysiological - conditions/ stress responses that have both mind and body components
