What is the function of bulbous corpuscle?
Function. This spindle-shaped receptor is sensitive to skin stretch, and contributes to the kinesthetic sense of and control of finger position and movement.
What is tactile corpuscle function?
The tactile corpuscle is responsible for transmitting the sensations of light touch and low-frequency vibrations from the periphery to the central nervous system.
Where is the Lamellated corpuscle?
n. 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.
What do Pacinian corpuscles detect?
Pacinian receptors detect pressure and vibration by being compressed, stimulating their internal dendrites. There are fewer Pacinian corpuscles and Ruffini endings in skin than there are Merkel’s disks and Meissner’s corpuscles.
Where are Meissner corpuscles?
Location. They are distributed throughout the skin, but concentrated in areas especially sensitive to light touch, such as the fingertips, palms, soles, lips, tongue, face and the skin of the male and female genitals. They are primarily located just beneath the epidermis within the dermal papillae.
What is the difference between tactile corpuscles and lamellar corpuscles?
Lamellar corpuscles are under the dermis. Tactile corpuscles can detect light touch.
What do Lamellated corpuscles do?
Function. Lamellar corpuscles detect gross pressure changes and vibrations and are rapidly adapting (phasic) receptors. Any deformation in the corpuscle causes action potentials to be generated by opening pressure-sensitive sodium ion channels in the axon membrane.
What is the difference in function between tactile and Lamellated corpuscles?
Tactile is flat and lamellated has a shape. A functional difference is that tactile provides fine touch, to judge texture including the lips, palms and nipples. lamellated has heavier pressure to detect vibrations in tissues such as hands, feet and breasts.
What is Krause end bulbs responsible for?
Thermoreceptors can include: Krause end bulbs, which detect cold and are defined by capsules; Ruffini endings, which detect warmth and are defined by enlarged dendritic endings; and warm and cold receptors present on free nerve endings which can detect a range of temperature.
What is the function of Meissner’s corpuscles and Pacinian corpuscles?
Meissner’s corpuscles respond to touch and low-frequency vibration. Ruffini endings detect stretch, deformation within joints, and warmth. Pacinian corpuscles detect transient pressure and high-frequency vibration.
What is a bulboid corpuscle?
The bulboid corpuscles ( end-bulbs of Krause) are cutaneous receptors in the human body. The end-bulbs of Krause were named after the German anatomist Wilhelm Krause (1833–1910).
What is the structure and function of the spleen?
Structure and function of the spleen The spleen combines the innate and adaptive immune system in a uniquely organized way. The structure of the spleen enables it to remove older erythrocytes from the circulation and leads to the efficient removal of blood-borne microorganisms and cellular debris. This function, in combination with a h …
What is the function of the white pulp of the spleen?
Because of this, the white pulp of the spleen has a very important role in the normal immune response to infection. Antigen presenting cells may enter the white pulp, resulting in activation of the T-lymphocytes stored there.
What are the lymphoid follicles of the spleen?
The branches of central arterioles are surrounded by the sharply defined areas of B lymphocytes, comprising the lymphoid follicles of the spleen. There are two types of lymphoid follicles depending on the features of the B lymphocytes that comprise them: Primary follicles and secondary nodules.