Urinary Bladder Definition An organ present in the urinary tracts of several animal species is called the urinary bladder. The urine is stored in the urinary bladder before urination. The urine is produced and delivered by the kidneys through two ureters. The urinary bladder in humans is capable to hold
Prostate Gland Definition The set of glands between the bladder and the penis is called the prostate gland. A component of seminal fluid, called prostate fluid is secreted by this gland, which helps sperm cells swim. Skene’s gland is the female homolog of the prostate gland, but in this article,
Table of Contents Myocardium Definition The myocardium is the muscular layer of the heart. It consists of cardiac muscle cells (cardiac myocytes [also known as cardiac rhabdomyocytes] or cardiomyocytes) arranged in overlapping spiral patterns. What is Myocardium? It is the heart’s muscular middle layer, wedged between the epicardium and the
Table of Contents Coenzyme Definition Coenzyme is a molecule necessary for catalysis of a chemical reaction by a specific enzyme. Many are produced from vitamins, particularly water-soluble vitamins that have been phosphorylated. When coenzymes attach to the active site of an enzyme (called an apoenzyme) and then create the active
Table of Contents Enzyme Definition A biomolecule that speeds up particular chemical processes by acting as a catalyst. Proteins and RNA (ribozymes) molecules are both examples of enzymes. What is Enzyme? An enzyme is a type of biomolecule that can be made biologically (naturally) or by other methods (synthetically). Its
Table of Contents Semilunar Valves Definition The human heart is made up of four chambers: two atria and two ventricles, each with its own set of functions. Each of the heart’s four chambers has a different role in blood circulation. Through the superior vena cava and inferior vena cava, the
Table of Contents Involuntary Muscle Definition Muscles which are under our control are called as Voluntary muscle, whereas those which cannot be controlled by ourselves are called as involuntary muscle. These muscles are under the control of autonomic nervous system. Functions such as contraction, expansion and other functions are involuntary.
Table of Contents Positive Feedback Definition There are two types of feedback in the feedback loop: positive feedback and negative feedback. They function to keep the body balanced in a variety of situations. Feedback loops are biological systems that maintain the internal integrity of a live entity based on its
Table of Contents Hypotonic Solution Definition It refers to a solution that has a lower solute concentration than the solute concentration in the other solution when seen through a semipermeable membrane. It’s crucial to grasp what a ‘solution’ in science entails. A homogeneous system made up of two or more
Table of Contents What is Stimulus? Our sensitivity to temperature allows us to recognise hot or cold situations. Sweating (perspiration) begins in our bodies when the temperature is too high. Similarly, in a cold environment, our bodies’ small hairs stand up. Piloerection is the term for this occurrence. As a