5 Simple Techniques For human anatomy and physiology definition

arteriovenous anastomosis – quick vessel connecting an arteriole straight to a venule and bypassing the capillary beds.

capsaicin – molecule that activates nociceptors by interacting that has a temperature-delicate ion channel and is also the basis for “incredibly hot” sensations in spicy food items.

cribriform plate – modest, flattened regions with quite a few little openings, Situated to either side on the midline in the floor on the anterior cranial fossa; fashioned via the ethmoid bone.

motion prospective – change in voltage of the mobile membrane in reaction into a stimulus that results in transmission of an electrical signal; one of a kind to neurons and muscle mass fibres.

cranial – describes a position earlier mentioned or increased than Yet another Component of the body correct; also referred to as excellent.

Bowman’s capsule – cup-shaped sack lined by an easy squamous epithelium (parietal surface area) and specialised cells called podocytes (visceral surface area) that participate in the filtration method; gets the filtrate which then passes on for the PCTs.

bursa – connective tissue sac containing lubricating fluid that stops friction amongst adjacent constructions, including skin read more and bone, tendons and bone, or in between muscles.

basal nuclei – nuclei of your cerebrum (with a several parts inside the higher brain stem and diencephalon) that are chargeable for evaluating cortical motion instructions and evaluating them with the overall state of the person as a result of wide modulatory action website of dopamine neurons; mostly relevant to motor functions, as evidenced throughout the symptoms of Parkinson’s and Huntington’s diseases.

alar cartilage – cartilage that supports the apex with the nose and assists shape the nares; it is linked to the septal cartilage and connective tissue with the alae.

autorhythmicity – skill of cardiac muscle mass to initiate its possess electrical impulse that triggers the mechanical contraction that pumps blood at a set speed with no nervous or endocrine Handle.

anulus fibrosus – challenging, fibrous outer portion of an intervertebral disc, which can be strongly anchored to the bodies on the adjacent vertebrae.

cerebral peduncles – segments of the descending motor pathway that make up the white issue with the ventral midbrain.

coronal suture – joint that unites the frontal bone to the proper and left parietal bones across the major of the cranium.

coronoid fossa – despair to the anterior floor from the humerus over the trochlea; this Room receives the coronoid means of the ulna if the elbow is maximally flexed.

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