English

How Do Hormones Reach the Organs They Control? - Science

Advertisements
Advertisements

Question

How do hormones reach the organs they control?

Advertisements

Solution

Hormones reach the target organ through the blood and act on it.

shaalaa.com
  Is there an error in this question or solution?
Chapter 2: Control and Coordination - Exercise 2 [Page 117]

APPEARS IN

Lakhmir Singh Biology (Science) [English] Class 10
Chapter 2 Control and Coordination
Exercise 2 | Q 58.2 | Page 117

Video TutorialsVIEW ALL [1]

RELATED QUESTIONS

How does our body respond when adrenaline is secreted into the blood?


What is the name of the system of glands which produces hormones?


Which halogen element is necessary for the making of thyroxine hormone by the thyroid gland?


Name one gland which acts only as an exocrine gland.


What part does the diet play in helping us to have a healthy thyroid gland?


Which one term of the following includes the other three?
 thyroid, ductless gland, thymus, pituitary, ovary


What substances are made by endocrine glands?


Name the hormones secreted by given endocrine glands :

Pancreas


What is the function of insulin hormone? What type of patients are given insulin injections?


Write the names of all the major endocrine glands present in the human body. Which of these glands also function as exocrine glands?


In what ways are puberty and adolescence result of the activity of some glands in the human body?


Which hormone prepares the body for action?


The underactive endocrine gland which causes goitre is :
(a) pancreas
(b) thyroid
(c) adrenal
(d) pituitary


A and B are the two systems of control and coordination in the human body. The messages in system A are transmitted in the form of chemical substances C which travel comparatively slowly through the blood stream. The substances C are made in tissues D present in the head and trunk of human body. The messages in system b are transmitted very quickly in the form of electrical impulses through fibres E. The effect of messages transmitted by system b usually lasts for a much shorter time as compared to those transmitted by system A.
(a) Name the system A. What does system A consist of?
(b) Name the chemical substance C.
(c) What is tissue D? Name any five such tissues in the human body.
(d) Name the system B. What does system B consist of?
(e) Name the fibres E.
(f) State whether system A controls the working of system B or system B controls the working of system A.


A and B are two pairs of glands that are present in the human endocrine system. The pair A is found only in females, whereas B is present only in males. Glands A make and secrete two hormones C and D, whereas glands B make and secrete only one hormone E. In addition to hormones, Glands A make gametes F, whereas glands make gametes G.
(a) What are the glands A?
(b) What are the hormones C and D?
(c) What are the glands B? Name the hormone E.
(d) What are the gametes F and G?
(e) Which event in the life of males and females is associated with the secretion of the hormones C, D and E?


The secretion of which hormone leads to physical changes in the body when you are 10-12 years of age?


Assertion: On attaining puberty, breast size increases and reproductive organs develop in females.

Reason: Ovaries release the hormone progesterone in females.


We are advised to take iodised salt in our diet by doctors. Justify its importance in our bodies.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×