What is the Stress Response | Simply Psychology

 

outline the pituitary adrenal system

Jun 02,  · Question: Outline the pituitary adrenal system The main features of the pituitary adrenal system is the hypothalamus that triggers the release of CRH. The CRH then stimulates the anterior pituitary gland which then releases a hormone called ACTH. The hypothalamic–pituitary–adrenal axis (HPA axis or HTPA axis) is a complex set of direct influences and feedback interactions among three components: the hypothalamus, the pituitary gland (a pea-shaped structure located below the thalamus), and the adrenal (also called "suprarenal") glands (small, conical organs on top of the kidneys). Main features of pituitary-adrenal system are that the hypothalamus communicates with the 1 mark for a brief outline and 3 marks for a correct and coherent outline of the system. GCE Psychology (Specification A) Mark Scheme Unit 02 Document RetrievalAuthor: Tihohudpetc Maihaga.



By Saul McLeodpublished Stress is a biological and psychological response experienced on encountering a outline the pituitary adrenal system that we feel we do not have the resources to deal with.

A stressor is the stimulus or threat that causes stress, e. Firstly, our body judges a situation and decides whether or not it is stressful. This decision is made based on sensory input and processing i. If the situation is judged as being stressful, the hypothalamus at the base of the brain is activated. The hypothalamus in outline the pituitary adrenal system brain is in charge of the stress response.

When a stress response is triggered, it sends signals to two other structures: the pituitary glandand the adrenal medulla.

The adrenal cortex releases stress hormones called cortisol. This have a number of functions including releasing stored glucose from the liver for energy and controlling swelling after injury.

The immune system is suppressed while this happens. The hypothalamus also activates the adrenal medulla. The adrenal medulla is part of the autonomic nervous system ANS. The ANS is the part of the peripheral nervous system that acts as a control system, maintaining homeostasis in the body. These activities are generally performed without conscious control.

The adrenal medulla secretes the hormone adrenaline. This hormone gets the body ready for a fight or flight response, outline the pituitary adrenal system. Physiological reaction includes increased heart rate. Adrenaline lead to the arousal of the sympathetic nervous system and reduced activity in the parasympathetic nervous system. Adrenaline creates changes in the body such as decreases in digestion and increases sweating, increased pulse and blood pressure.

No ill effects are experienced from the short-term response to stress and it further has survival value in an evolutionary context. Currie, A. The pathology of the pituitary and adrenal glands in systemic disease in man, outline the pituitary adrenal system. Proceedings of the Royal Society of Medicine48 11 McLeod, S.

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outline the pituitary adrenal system

 

Endocrine System Outline. STUDY. PLAY. What is endocrinology? Pituitary, thyroid, parathyroid, adrenal, and pineal. What are the 4 organs not completely endocrine glands? Hypothalamus, gonads, pancreas, and thymus What two hormones produced by the adrenal medulla mimic the action of sympathetic nervous system? Apr 30,  · The anatomy and unique blood supply of the hypothalamic-pituitary axis are essential to its function. The hypothalamic hormones are small peptides that are generally active only at the relatively high concentrations achieved in the pituitary portal blood system. The hypothalamic–pituitary–adrenal axis (HPA axis or HTPA axis) is a complex set of direct influences and feedback interactions among three components: the hypothalamus, the pituitary gland (a pea-shaped structure located below the thalamus), and the adrenal (also called "suprarenal") glands (small, conical organs on top of the kidneys).