Explanation

The medulla oblongata is a cone-shaped neuronal mass in the brain located in the brain stem, directly below the pons and anterior to the cerebellum.

Explanation

Arteries are blood vessels responsible for carrying oxygen-rich blood away from the heart to the body.

Veins are blood vessels that carry blood low in oxygen from the body back to the heart for reoxygenation.

Explanation

Answer:

B

• Electric impulse also called  Nerve impulse
•  Messages in the form of electrical impulses are constantly moving back and forth between the brain and other parts of the body. A special cell called a neuron is responsible for sending these messages.

Explanation

Answer:

B

When you enter a dark room with bright sunlight, you can't see anything at first. This is due to the small size of the pupil. As we enter the darkroom, our pupils dilate and more light comes into our eyes, so we can see.

Explanation

Answer:

B

According to Archimedes' principle, when an object is completely or partially submerged in water, the water moves according to its volume. The body swims in the water when its weight is lighter than the weight of the same amount of water. If its weight is equal to the weight of the same amount of water, it remains floating.

Explanation

Separation of water or sand or cement from freshly mixed concrete is known as: Segregation.18-Feb-2019

Explanation

Short-sightedness is caused due to elongation of the eyeball

 It also may result when the curve of the cornea is too steep. 

The messages sent from the retina to the brain are perceived as blurry

Explanation

Personality plays a major role in how an individual reacts to stress.

Different personality traits, such as resilience, optimism, or neuroticism, can significantly influence how a person perceives and copes with stressful situations. 

Explanation

A man should take (3.7 liters) a day, this includes fluids from water, beverages like teas and juice, and from food.

Explanation

Answer

C

The liver performs a relevant FUNCTION in retaining blood glucose levels. Following intake of food, extra glucose may be saved in the liver as glycogen . This is inspired through insulin release.