Topic 9 Bio

pancreas secretes glucagon

a- b- c-

Nonsteroid hormones differ from steroid hormones in that they

bind to a receptor on the outer surface of the cell membrane

the liver converts stored glycogen to glucose

c-

Insufficient production of growth hormone by the anterior pituitary may result in

dwarfism

A man driving through his neighborhood suddenly jams on his car brakes to avoid hitting a child who runs into the road after a ball. A few seconds later, the driver finds that he is shaking and his heart is pounding. This is primarily due to the secretion of which one of the following?

epinephrine from the adrenal medulla

The ovaries of women function as endocrine organs by producing:

estrogen and progesterone

A person who suffers from diabetes insipidus, the symptoms of which include dehydration and excessive urination, has _______secretion of the _________ hormone.

hyper; FSH - hyper; LH -

When blood sugar is high after a meal, there should be a release of ________ .

insulin

When you close your eyes at night, the pineal gland gives off __________, a hormone that allows us to manage our circadian rhythm.

melatonin

In certain areas of the world where rainfall is high, certain nutrients, including iodine, are leached (removed) from the soil. A person living in such an area might experience which of the following conditions?

pituitary dwarfism -

Insulin helps regulate blood sugar at homeostatic levels by

promoting the entry of glucose into cells

Hormones act upon specific target cells because:

target cells display the appropriate receptor for a particular hormone

The testes of men function as endocrine organs by producing:

testosterone

When oxytocin is released during childbirth, the hormone targets cells in the

uterus

Which of the following is NOT true of the hypothalamus?

-All of the above are true* -Often referred to as the "control center" -It is located in the forebrain -It makes ADH and oxytocin -It receives messages from the nervous system and sends messages to the pituitary gland

The following is a list of events involved in the activation of a cell by a steroid hormone. Which one of the following answers best represents the order in which the steps occur? 1 - cellular response to the hormone 2 - activation of a gene 3 - formation of a hormone-receptor complex 4 - diffusion of the hormone through a target cell membrane 5 - production of a protein

4, 3, 2, 5, 1

peak glucose levels in plasma

A

What is the The Hypothalamic-Pituitary-Adrenal (HPA) Axis?

A and D are true

pancreas secretes insulin

B

pancreas stops secretion of insulin

C

T/F: In order for all hormones to cause a response, they must first bind to an appropriate receptor on the target cell's membrane.

False

FSH is a hormone important to the proper functioning of the ovaries and testes. This hormone will not be released from the anterior pituitary until ________ is released from the hypothalamus.

GnRH

All of the following statements about the endocrine system are TRUE EXCEPT which one?

Hormones are distributed via the circulatory system. - Many hormones are not able to cross the blood-brain barrier.- The endocrine system and the nervous system frequently interact. -

Why does it take awhile to calm down after experiencing stress/panic?

The hormones that have been coursing through your body first have to stop being released, and then your body has to break them down

T/F: Steroid hormones bind to receptors in the nucleus to activate or deactivate genes.

True

T/F: Steroid hormones typically move across the cell and nuclear membranes to bind to receptors in the nucleus.

True

Which of the following is TRUE of the thyroid gland?

When hyperactive, it can speed up metabolism