Peripheral mechanoreceptors

This tutorial by Nicole from Ken Hub explores mechanoreceptors, specialized nerve endings sensitive to physical distortion. It covers their types, including proprioceptors, baroreceptors, and tactile receptors, and their functions in the body. The video also discusses clinical scenarios like burns, highlighting the role of mechanoreceptors in sensation and reflexes. The focus is on cutaneous mechanoreceptors, with detailed explanations of various tactile receptors such as Pacinian, Ruffini's, and Meissner's corpuscles.

What is the primary function of mechanoreceptors?

• To monitor blood sugar levels

• To detect chemical changes

• To sense physical distortion

• To regulate body temperature

Which type of proprioceptor is responsible for monitoring muscle stretch?

• Free nerve endings

• Merkel cells

• Muscle spindle fibers

• Golgi tendon organs

Where are baroreceptors primarily located?

• In the bones

• In the muscles

• In the walls of blood vessels

• In the skin

Which tactile receptor is most sensitive to vibration?

• Ruffini's corpuscles

• Merkel cells

• Pacinian corpuscles

• Meissner's corpuscles

What is the primary function of Ruffini's corpuscles?

• Monitoring blood pressure

• Detecting light touch

• Detecting slippage of objects

• Sensing high-frequency vibrations

Which receptor is responsible for detecting light touch and is found in the fingertips?

• Pacinian corpuscles

• Merkel cells

• Ruffini's corpuscles

• Golgi tendon organs

What is the role of free nerve endings in the skin?

• Regulating muscle contraction

• Monitoring blood flow

• Sensing pressure, temperature, and chemicals

• Detecting only temperature

How do hair root plexuses function in the skin?

• By detecting light touch

• By regulating temperature

• By monitoring blood pressure

• By sensing hair movement

What type of burn affects only the epidermis?

• Fourth degree burn

• Second degree burn

• Third degree burn

• First degree burn

Which mechanoreceptor might survive a third-degree burn?

• Meissner's corpuscles

• Pacinian corpuscles

• Merkel cells

• Ruffini's corpuscles