Endocrine System

Question 1

Endocrine System

Answer 1

Works in parallel with the nervous system to maintain homeostasis by releasing chemical hormones from various glands

Question 2

Hormones

Answer 2

chemical messengers sent to many parts of the body to produce a specific effect on a target cell or organ

Question 3

Endocrine Gland

Answer 3

a ductless gland that secrets hormones directly into the bloodstream

Question 4

Target Cells

Answer 4

-hormones do not seek or excite particular cells/organs
-they travel in bloodstream cells/organs in the body where they may or may not have an affect
cells contain receptors proteins for particular hormones
-these cells are called target cells / target organs
-hormones combine with receptors in lock-and-key fashion
-this binding causes the target cell to respond

Question 5

Nervous System Vs Endocrine System

Answer 5

electrical control chemical control

made of neurons made of glands

fast acting slow acting

short duration time long duration time

impacts precise local cells impacts many distant cells

Question 6

SIMILARITIES between the Nervous System & Endocrine System?

Answer 6

both react to stimuli
both systems works to maintain homeostasis by feedback loops
both are systems that send messages (electrical or chemical)
both systems control some body processes ex: pregnancy
ex: some nervous tissue also secretes hormones
ex: some chemicals act as neurotransmitters & hormones

Question 7

What is the connection between the 2 systems

Answer 7

Hypothalamus Pituitary Gland
The general negative feedback loop to maintain homeostasis…
(a) hypothalamus monitors levels in the body
(b) hypothalamus secretes a releasing hormone to the anterior
pituitary
(c) the anterior pituitary secretes a tropic hormone which
stimulates a target gland
(d) target gland secretes its hormone which impacts a target tissue