5 Simple Techniques For human anatomy and physiology definition

5 Simple Techniques For human anatomy and physiology definition

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circle of Willis – (also, arterial circle) anastomosis Positioned at The bottom on the Mind that assures continual blood offer; fashioned from branches of The inner carotid and vertebral arteries; supplies blood to your Mind.

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cortical reaction – next fertilisation, the discharge of cortical granules within the oocyte’s plasma membrane in to the zona pellucida creating a fertilisation membrane that forestalls any additional attachment or penetration of sperm; Portion of the slow block to polyspermy.

distal convoluted tubules – portions in the nephron distal to your loop of Henle that get hyposmotic filtrate with the loop of Henle and vacant into amassing ducts.

cranial – describes a situation above or better than A different part of the body good; also known as top-quality.

central sulcus – area landmark with the cerebral cortex that marks the boundary in between the frontal and parietal lobes.

dendrite – one of many branchlike processes that extends with the neuron mobile body and functions being a Speak to for incoming alerts (synapses) from other neurons or sensory cells.

brachial artery – continuation from the axillary artery in the brachium; supplies blood to Significantly from the brachial region; provides off various lesser branches that deliver blood to your posterior floor in the arm from the area on the elbow; bifurcates in to the radial and ulnar arteries in the coronoid fossa.

Cells, for instance, Possess a cell membrane (also known as the plasma membrane) that keeps the here intracellular environment—the fluids and organelles—independent with the more info extracellular surroundings. Blood vessels keep blood inside a shut circulatory process, and nerves and muscles are wrapped in connective tissue sheaths that separate them from encompassing buildings.

atrium – (plural = atria) upper or getting chamber in the heart that pumps blood in the reduced chambers just before their contraction; the proper atrium gets blood within the systemic circuit that flows into the appropriate ventricle; the still left atrium receives blood within the pulmonary circuit that flows in to the remaining ventricle.

central nervous procedure (CNS) – anatomical division with the anxious system Found throughout the cranial and vertebral cavities, particularly the Mind and spinal cord.

Responsiveness is the flexibility of the organism to regulate to changes in its inside and exterior environments. An illustration of responsiveness to exterior stimuli could incorporate going towards resources of meals and drinking water and faraway from perceived potential risks.

electronic arteries – formed with the superficial and deep palmar arches; offer blood into the digits.

coronoid fossa – despair around the anterior floor of the humerus previously mentioned the trochlea; this Place gets the coronoid technique of the ulna if the elbow is maximally flexed.