human anatomy organs for Dummies

human anatomy organs for Dummies

Blog Article

atrioventricular valves – 1-way valves Positioned concerning the atria and ventricles; the valve on the appropriate is known as the tricuspid valve, as well as 1 to the still left would be the mitral or bicuspid valve.

Mind stem – area on the Grownup brain that features the midbrain, pons, and medulla oblongata and develops within the mesencephalon, metencephalon, and myelencephalon in the embryonic brain.

denaturation – lack of condition in a very protein due to changes in temperature, pH, or chemical exposure.

central canal – longitudinal channel while in the centre of each and every osteon; has blood vessels, nerves, and lymphatic vessels; also referred to as the Haversian canal.

cervical vertebrae – 7 vertebrae numbered as C1–C7 that are located within the neck location of your vertebral column.

atrial reflex – (also, referred to as Bainbridge reflex) autonomic reflex that responds to extend receptors while in the atria that mail impulses to the cardioaccelerator spot to boost HR check here when venous move into the atria boosts.

Even so, erect posture has designed many mechanical difficulties—specifically, excess weight bearing. These problems have needed to be achieved by adaptations of the skeletal system.

anterior interventricular sulcus – sulcus Positioned in between the still left and correct ventricles on the anterior floor of the heart.

carotid sinuses – small pockets near the base of The interior carotid arteries which can be the places in the baroreceptors and chemoreceptors that bring about a reflex that aids inside the regulation of vascular homeostasis.

cervical curve – posteriorly concave curvature in the read more cervical vertebral column location; a secondary curve from the vertebral column.

activation gate – Portion of the voltage-gated Na+ channel that opens when the membrane voltage reaches threshold.

anaphylactic shock – variety of shock that follows a severe allergic reaction and outcomes from enormous vasodilation.

abducens nerve – sixth cranial nerve; chargeable for contraction of one of several extraocular muscles.

Mind circumstance – portion of the skull that contains and safeguards the Mind, consisting of your 8 bones that sort the cranial base and rounded higher skull.