Tachycardia is a condition of a heart that beats very fast
Answer:
Glucose for the first one, good luck on the second
Explanation:
A head injury happens due to trauma to the brain or skull and classified as close or sometimes penetrating. It may occur right away or develop slowly. An example is contusion which is the answer on this scenario. This is called mild traumatic injury caused by a blow on the head yet none of the tissue of the brain is torn.
Autoregulatory neural and endocrine mechanisms activate after blood loss to compensate for the loss and restore homeostasis.
Neural mechanisms involve blood pressure and blood chemistry. Cardiac centers and vasomotor centers may increase the blood flow and cardiac output (sympathetic) or decrease the blood flow and cardiac output (parasympathetic). Peripheral vessels are also constricted and nor epinephrine decreases flow in the arteries and decreases the flow in the veins.
Endocrine control acts in the renal and adrenal organs, the brain and heart. RBCs, renin/angiotensiogen/aldosterone, catecholamines, antidiretic hormone, atrial natriuretic hormone regulate blood volume and blood pressure by keeping the fluids in the cardiovascular system. It also initiates vasoconstrictors or vasodilators.
