Medical Definition of optimal
: most desirable or satisfactory : optimum optimal concentrations of a drug. Other Words from optimal.
What is meaning of optimal condition?
1 : the amount or degree of something that is most favorable to some end The substances were mixed in various proportions until an optimum was reached. especially : the most favorable condition for the growth and reproduction of an organism The soil condition for this crop is now at an optimum.
What is the meaning of optimal status?
The optimum or optimal level or state of something is the best level or state that it could achieve.
What does Lamellated mean?
The term lamellated (or laminated which means the same thing) is a radiopathological term used to describe the layered appearance of many calculi, including those of the renal tract, the salivary glands, and the biliary tree.
What is the main function of the Pacinian corpuscle?
function in human sensory reception
, Pacinian corpuscles) respond only to mechanical deformation. A Pacinian corpuscle is an onion-shaped structure of nonneural (connective) tissue built up around the nerve ending that reduces the mechanical sensitivity of the nerve terminal itself.
What is the difference between Meissner’s and Pacinian corpuscles?
Meissner’s corpuscles are rapidly-adapting, encapsulated neurons that responds to low-frequency vibrations and fine touch; they are located in the glabrous skin on fingertips and eyelids. … -Pacinian corpuscles are rapidly-adapting, deep receptors that respond to deep pressure and high-frequency vibration.
What is the main function of Merkel cells?
A special type of cell found right below the epidermis (top layer of skin). These cells are very close to the nerve endings that receive the sensation of touch and may be involved in touch. The cells also contain substances that may act as hormones.
What is another name for Meissner’s corpuscle?
Meissner corpuscles, also known as Wagner-Meissner corpuscles or tactile corpuscles, are a subset of mechanoreceptors first described by Professor Georg Meissner and Professor Rudolf Wagner in 1852.
Where do we find Pacinian corpuscles?
Pacinian corpuscles are large encapsulated endings located in the subcutaneous tissue (and more deeply in interosseous membranes and mesenteries of the gut). These receptors differ from Meissner’s corpuscles in their morphology, distribution, and response threshold.
What is a Thermoreceptor in anatomy?
Thermoreceptors are free nerve endings that reside in the skin, liver, and skeletal muscles, and in the hypothalamus, with cold thermoreceptors 3.5 times more common than heat receptors.
What are Pacinian corpuscles sensitive to?
Pacinian corpuscles are highly sensitive mechanoreceptors which respond only to rapid mechanical changes. They are particularly responsive to vibration and appear to subserve the type of sensibility known as vibration sense in man.
What is the meaning of calculi?
Calculi: The plural of calculus. Medically, a calculus is a stone, for example, a kidney stone.
For what kind of sensations are Pacinian corpuscles responsible?
Pacinian corpuscles detect transient pressure and high-frequency vibration. Krause end bulbs detect cold. Which of the following statements about mechanoreceptors is false? Pacini corpuscles are found in both glabrous and hairy skin.
What are Ruffini corpuscles?
Ruffini Endings (or Corpuscles) are found in the superficial dermis of both hairy and glaborous skin where they record low-frequency vibration or pressure. These receptors adapt slowly to pressure that results in stretching of the skin. They record the sustained presence of pressure on the skin. Advanced.
Are Pacinian corpuscles myelinated?
The Pacinian corpuscle consists of a myelinated sensory neuron whose terminal portion is unmyelinated. The unmyelinated nerve ending and the first node lie within a connective tissue capsule, as shown.
What is the purpose of thermoreceptor?
A thermoreceptor is a sensory receptor, or more accurately the receptive portion of a sensory neuron, that codes absolute and relative changes in temperature, primarily within the innocuous range.
What is a thermoreceptor do?
A thermoreceptor is a non-specialised sense receptor, or more accurately the receptive portion of a sensory neuron, that codes absolute and relative changes in temperature, primarily within the innocuous range. … For cold receptors their firing rate increases during cooling and decreases during warming.
Why is Thermoception important?
The detection of temperature is one of the most fundamental sensory functions across all species, and is critical for animal survival. Animals have thus evolved a diversity of thermosensory mechanisms allowing them to sense and respond to temperature changes (thermoreception).
What do Pacinian corpuscles look like?
The nerve ending is surrounded by many layers of cells and a connective tissue capsule. In skin sections, the layers of cells make the Pacinian corpuscles look something like an onion that has been cut down through the center, except that Pacinian corpuscles are much more elongated than onions.
Where are Lamellated corpuscles located?
Any of numerous small oval bodies that are sensitive to pressure, are found in the skin of the fingers and elsewhere, are formed of concentric layers of connective tissue. Also called pacinian corpuscle.
Why is Pacinian corpuscle described as a transducer?
The Pacinian corpuscle is a type of biological transducer. As a pressure stimulus is exerted on the corpuscle, the lamellae are compressed and exert pressure on the tip of the sensory neurone. … This region of the neurone becomes depolarised, reaching the threshold potential, and an action potential is generated.
Is a corpuscle a cell?
The word corpuscle is a medical term for a living cell, such as a red blood cell. … Blood and lymph cells are both considered to be corpuscles because they are suspended in liquid within the body.