Endocrine System Overview

<p>Leptin (C)</p> Signup and view all the answers

<p>Thymus (B)</p> Signup and view all the answers

<p>Negative feedback (C)</p> Signup and view all the answers

<p>They secrete chemicals through ducts that lead outside the gland. (B)</p> Signup and view all the answers

<p>Glucagon (B)</p> Signup and view all the answers

<p>In the neck (C)</p> Signup and view all the answers

<p>To stimulate a response in target cells. (D)</p> Signup and view all the answers

<p>By binding to specific cell-surface or intracellular hormone receptors. (D)</p> Signup and view all the answers

<p>The number of receptors available for that hormone. (B)</p> Signup and view all the answers

<p>A decrease in the number of receptors in response to rising hormone levels. (B)</p> Signup and view all the answers

<p>The nervous system provides signals that can stimulate or inhibit hormone secretion. (A)</p> Signup and view all the answers

<p>They coordinate to control body functions. (B)</p> Signup and view all the answers

<p>Pancreas. (A)</p> Signup and view all the answers

Located at the base of the brain; produces six hormones.

Receives signals from the hypothalamus and produces six hormones.

Extension of the brain that releases hormones from the hypothalamus.

Located in the neck; produces thyroxine, triiodothyronine, and calcitonin.

Located on top of kidneys; consist of cortex and medulla.

Clusters of endocrine cells in the pancreas; release insulin and glucagon.

Regulatory mechanism that maintains hormone levels within a range.

Hormones produced by the gastrointestinal tract to aid digestion.

The system that produces hormones to regulate body processes.

Organs that secrete hormones directly into the bloodstream.

Glands that secrete substances through ducts to the outside of the body.

Chemical messengers produced by endocrine cells that trigger responses in target cells.

Cells that respond to specific hormones due to the presence of receptors.

Molecules on or in cells that hormones bind to, causing a response.

Increase in the number of receptors in response to higher hormone levels.

Decrease in the number of receptors due to rising hormone levels.