Search Results for: contracts
Antagonistic Muscle
Definition of Antagonistic Muscle What does the term “antagonistic” mean? As the name suggests, the word antagonistic... Read More
Smooth muscle
The smooth muscle can be described as a type of muscle in the human body that is non-striated and involuntary in action.... Read More
Semilunar valve
The human heart structure consists of heart chambers (2 atria and 2 ventricles) that differ functionally from each other.... Read More
Patellar reflex
Definition noun, plural: patellar reflexes A stretch reflex wherein the anterior muscles of the thigh contracts by reflex as... Read More
Ventricular syncytium
Definition noun A network of cardiac muscle cells connected by gap junctions that allows coordinate contraction of the... Read More
Atrial syncytium
Definition noun A network of cardiac muscle cells connected by gap junctions that allows coordinate contraction of the... Read More
Thyropharyngeus
Definition noun (anatomy) The superior muscle arising from the thyroid cartilage, and, together with cricopharyngeus,... Read More
Involuntary muscle
A muscle act typically either under the control of the will or without conscious control. Muscles that can be controlled at... Read More
Refractory Period
(neurology) the time after a neuron fires or a muscle fiber contracts during which a stimulus will not evoke a response.The... Read More
Agonist muscle
Definition noun A muscle that contracts while another muscle relaxes Supplement Muscles may be classified according to the... Read More
Circulation
Blood Blood is composed of a liquid, plasma, and blood cells such as erythrocytes (red blood cells,) leukocytes (white... Read More
Respiration
Organization of the Respiratory System Each lung is composed of air sacs called alveoli - the sites of gas exchange with... Read More
Peristalsis
What is Peristalsis? Peristalsis is the series of involuntary, wave-like muscle movements in the cylindrical, hollow tube... Read More
Myocardium
Myocardium Definition What is the myocardium of the heart? It is the muscular middle layer of the heart that is... Read More
Stretch reflex
Definition noun A reflex contraction of a muscle when the muscle proprioceptors (e.g. muscle spindles) are... Read More
Cytokinesis
The cell cycle of eukaryotes is a cyclical series of biological events that certain asexual cells go through. The cell cycle... Read More
Contractile vacuole
Definition noun, plural: contractile vacuoles (cell biology) A specialized vacuole of eukaryote cells, especially protozoa,... Read More
Valva trunci pulmonalis
valva trunci pulmonalis --> pulmonary valve (Science: anatomy, cardiology) The heart valve that divides the right... Read More
Ventilation
Ventilation Definition Often when persons think of ventilation, they think of getting clean or enough air into a room. This... Read More
Blood vessel
Definition noun, plural: blood vessels Any of the vessels in cardiovascular system and functions by carrying blood... Read More
Encystment
Encystment 1. (Science: biology) a process which, among some of the lower forms of life, precedes reproduction by budding,... Read More
Human Reproduction
Terminology and Concepts Primary reproductive organs are called gonads - testes in the male and ovaries in the female.... Read More