Biology (26-56) Week 9

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.

LH ACTH

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

Melatonin

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

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

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

insulin

Which of the following is NOT true of the hypothalamus?

"All of the above are true"

According to one of the videos you watched this week, the Nervous System is to gmail as the Endocrine System is to:

-Nervous System -Reproductive -Hormones

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

Which of the following is TRUE of the thyroid gland?

When hyperactive, it can speed up metabolism

The liver converts stored glycogen to glucose (picture)

E

In order for all hormones to cause a response, they must first bind to an appropriate receptor on the target cell's membrane.

False

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

Hormones act more quickly than the nervous system.

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

-A and D are true

Peak glucose levels in plasma (picture)

A

pancreas stops secretion of insulin

B

Pancreas secretes insulin (picture)

D

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

Dwarfism

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?

Goiter

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

Hypo; ADH

The testes of men function as endocrine organs by producing

Testosterone

Steroid hormones bind to receptors in the nucleus to activate or deactivate genes.

True

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

Uterus

A tumor growing on the___pituitary gland may result in a person growing to extreme heights, in excess of 7 feet tall!

anterior

Nonsteroid hormones differ from steroid hormones in that they

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

The ovaries of women function as endocrine organs by producing

estrogen and progesterone

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

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

true