Hormones and Signal Transduction: Introduction by Kevin Ahern, PhD

About the Lecture

The lecture Hormones and Signal Transduction: Introduction by Kevin Ahern, PhD is from the course Hormones and Signal Transduction. It contains the following chapters:

Hormones and Signal Transduction
Hormones

Included Quiz Questions

Which statement regarding hormones is true?

They are the first messengers of a multi-component signal.
They all cross the lipid bilayer by themselves.
They work in the region of the body where they are made.
They can diffuse through the blood-brain barrier.
They are all regulated by the pituitary gland.

Which statement about steroid hormones is true?

They cross the cell membrane and bind to intracellular receptors to exert their effects.
They bind to the cell membrane receptors to convey their message to the interior of the cell.
They need a carrier molecule for their transfer from the site of origin to the nuclear membrane.
They directly bind to the surface of the red blood cells for their transfer to their site of action.
They stimulate the secondary messenger molecules circulating in the blood plasma.

Which statement regarding adrenaline is correct?

It plays an important role in the fight-or-flight response.
It leads to increased blood flow to the brain and a drop in blood sugar levels.
It is produced by the heart cells in response to danger.
It stimulates the intestinal tract to release the enzymes for the breakdown of fats.

What is T3?

A thyroid hormone, known as triiodothyronine that affects almost every physiological process in the human body.
An adrenal hormone that plays an important role in the fight-or-flight response.
A liver hormone that plays an important role in the secretion of enzymes in the intestinal tract.
Sex hormones that control the morphological changes in adult humans.
A substance, important in the production of thyroid-stimulating hormone from the anterior pituitary gland.