B11-Principles of Hormonal Control

Question 1

what is a hormone

Answer 1

is any member of a class of signaling molecules target distant organs to regulate physiology and behavior.

Question 2

what are endocrine glands

Answer 2

Endocrine glands are glands of the endocrine system that secrete their hormones directly into the blood rather than through a duct.

Question 3

what is the difference between Coordination and control by hormones and coordination and control by the nervous system.

Answer 3

Nervous control is very rapid and integral for immediate action, coordination and control, and receiving and interpreting messages from your environment.

The rapid control is achieved via a network of neurons in the central and peripheral nervous systems (CNS and PNS).

Question 4

how do neurons function

Answer 4

The neurons connect onto each other and a rapid electrical impulse is transmitted from one to the other

Question 5

what are the pituitary glands also known as

Answer 5

master gland of the endocrine system

Question 6

whyare pituitary glands master glands of the endocrine system

Answer 6

because it controls the function of most other endocrine glands and is therefore sometimes called the master gland.

Question 7

what happens if the pituitary gland doesn’t produce enough growth hormone

Answer 7

growth can slow

A lack of growth hormone causes growth hormone deficiency.

This can cause a child to be very short to have very low bone density and muscle strength.

Question 8

what happens if the pituitary gland continues to produce growth hormone is adults

Answer 8

In adults, excessive growth hormone for a long period of time produces a condition known as acromegaly, in which patients have swelling of the hands and feet and altered facial features.