Question

1. _______ corpuscles respond to heavery pressure

2. Skin touch is sensed by ________ receptors

3. Pain in the left arm caused by lack of blood to the heart is atype of _________ pain

4. Relatively thin nerve fibers associated with the sensation of sharp pain

5. The pain supresing mor[hine like substance in our body known as the natural pain control

6. List two types of headaches

7. Define sensory adaptation

Answer 1

1. Pacinian corpuscles respond to heavy pressures.

Pacinian corpuscles are found in many areas of the body including skin.PAcinian corpuscles are sensitive to mechanical and vibratory pressure.

2.. Skin touch is sensed by touch receptors.

Touch receptors are the nerve cells that tell the brain about tactile sensations.There are several types of touch receptors widely divided into two groups : a.Mechanoreceptors that tell sensations of pushing,pulling or movement b. thermoreceptors that tell about sensations of temperature.

3. Pain in the left arm caused by lack of blood to the heart is a type of psychological pain.

Pain can be referred from a visceral to a somatic area so that pain in the arm could actually be cardiac in origin;pain is always real although it may have psychological components.

4. Relatively thin nerve fibres associated with sensation of sharp pain are acute pain fibers. They carry cold,pressure and acute pain signals beacuse they are thin and myelinated.

5. Endorphins are the pain suppressing morphine like substance in our body known as the natural pain control.It is a type of hormone secreted in the brain and nervous system having many physiological functions.They are peptides which activate the body's opiate receptors causing analgesic effect.

6.Headaches are of many kinds , out of which two types are listed below :

a. Tension headache : It is the most common type of headaches identified.It is characterized by pressure or tightness on both sides of the head and neck.

b. Migrane ; Characterized by severe throbbing in the head.It has the symptoms of nausea and vomiting ; sensitivity to light,sound or smell.

7. Sensory adaptation is a phenomenon that occurs when the sensory receptors become exposed to stimuli for a prolonged period.Depending on the stimulus , receptors may increase or decrease their ability to respond and develops dimnished sensitivity to the stimulus. Eg; Noise adaptation - Individuals get adapted to the noise within their environment,Smell adaptation - tobacco smokers do not get the smell of cigarettes.

Hope the answer was clear and helpful.

thanks.............