Name four types of cutaneous sensory receptors

Cutaneous receptors are:

• Pacinian corpuscles-These are types of mechanoreceptor (response to mechanical  stimuli such as pressure or vibration). They are nerve endings in the skin that are sensitive to vibration and pressure

• Merkel's disc-These are types of mechanoreceptors, nerve endings that are sensitive to mechanical pressure, position, and sustained touch (shapes and edges of objects).

•Ruffini's end organ- These are types of mechanoreceptors slowly adapted that detects skin stretch.

•Meissner's corpuscles- These are types of mechanoreceptors, nerve endings responsible for sensitivity to light touch (changes in texture).

condenser is used to focus in the light microscope.

the earth is thought to have been formed about 4.6 billion years ago by collisions from a cloud of hydrogen, helium, rock, ice and other materials. these were pulled together by gravity to form objects in and around earth like- asteroids and small early planets called planetesimals.

so, the best possible answer to this question will be option d- to harden materials to form different parts of earth’s layers