Changes in the composition of blood
In the last century it found that the irritation of the nerves going to the bone marrow, causing an increase in the number of red blood cells in the blood of dogs by 13-15% (SP Botkin, 1883).
Irritation of the visual analyzer elongational photoperiod increases the total amount of proteins in the plasma, while increasing the amount of the albumin and reducing the amount of globulin.
Morphological and chemical composition of the blood varies with stimulation of the chemoreceptors vascular metabolic products, e. g., during muscular work. Reflex changes in the blood occur during stimulation interoceptors digestive tract (digestive leukocytosis).
Composition of the blood is regulated by reflex in the brain that affect the number of formed elements and plasma composition. Especially great role of the hypothalamic region of the brain as an intermediate regulator of the blood through the unconditioned reflexes. The cerebral hemispheres have an impact on changes in the composition of blood through the midbrain. The sympathetic nervous system is usually turned on by blood, and the parasympathetic – brakes. However, the effect of both divisions of the autonomic nervous system on the blood varied. Especially great is the importance of the functional state of the nervous system for the value erythron. Shutting reflexes of the receptors of the vascular system, liver, spleen, kidney and other internal organs reduces erythron. Afferent impulses reflexively regulating blood, receptors are also derived from bone marrow.
The composition of the blood changes and neuro-humoral way, such as when you receive hormone adrenaline, thyroxine, and others.
Also definitely reflex changes of the blood, there are conditional reflex changes in the number of red blood cells, white blood cells and platelets.
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