Advertisements
Advertisements
Question
Name the hormone secreted in scary situations by animals. Write any three responses which enable the animal body to deal with it.
Solution
A hormone called adrenaline that is secreted from the adrenal glands. There are three reactions that let the body deal with it:
- The target organs or the specific tissues on which it acts include the heart. As a result, the heart beats faster, resulting in supply of more oxygen to our muscles.
- The blood to the digestive system and skin is reduced due to contraction of muscles around small arteries in these organs. This diverts the blood to our skeletal muscles.
- The breathing rate also increases because of the contractions of the diaphragm and the rib muscles.
APPEARS IN
RELATED QUESTIONS
Name the hormones secreted by the given endocrine glands and specify one function.
Pancreas
What is the name of in-built 'arrangement' in our body which controls the timing and amount of hormones released by various endocrine glands in the body?
Name one gland which acts only as an endocrine gland.
If sugar is detected in the urine of a person, name the disease he is suffering from.
Which one term of the following includes the other three?
thyroid, ductless gland, thymus, pituitary, ovary
Why do you need iodine in your diet?
One of the following statements is not true about thyroxine. This is :
(a) Thyroid gland requires iron to synthesise thyroxine
(b) It regulates carbohydrate, protein and fat metabolism
(c) Iodine is essential for the synthesis of thyroxine
(d) Thyroid gland can enlarge due to lack of thyroxine
The underactive endocrine gland which causes goitre is :
(a) pancreas
(b) thyroid
(c) adrenal
(d) pituitary
The gland X which is located just below the brain in the human head secretes a chemical substance Y which controls the development of ones and muscles in the body of a person. Secretion of too little of substance Y as well as the secretion of too much of substance Y by the gland X leads to abnormal development of the body of a person.
(a) Name the gland X.
(b) What is the chemical substance Y?
(c) What happens if too little of substance Y is secreted?
(d) What happens if too much of substance Y is secreted?
(e) Name the system of glands in the human body of which gland X is a part.
How does chemical coordination take place in animals?
