Endocrine System Quiz

A system that works with the nervous system to maintain homeostasis using hormones.

Chemical messengers produced by endocrine glands or modified neurons, secreted directly into the bloodstream.

Glands that secrete hormones directly into the bloodstream without ducts.

Glands that secrete substances onto epithelial surfaces through ducts.

The process of maintaining a stable internal environment in the body.

The endocrine system has slower reactions and long-lasting effects compared to the nervous system.

Substances that transmit signals in the body, including hormones in the endocrine system and neurotransmitters in the nervous system.

Hormones travel through the bloodstream, affecting all cells and tissues in the body.

Cells that have receptors for specific hormones and are affected by them.

Hydrophilic chains of amino acids with receptors on cell membranes.

Hormones synthesized from cholesterol, hydrophobic, and bind to transport proteins.

Secretion levels feedback to the gland producing them, influencing activity.

Mechanism where rising hormone levels decrease the gland's activity.

Mechanism where falling hormone levels increase the gland's activity.

Part of the brain controlling the pituitary gland, with a portal blood system.

Outer region of the adrenal glands that produces hormones like glucocorticoids and mineralocorticoids.

Hormones from the adrenal cortex that increase blood sugar and help manage stress.

Hormones that regulate electrolyte levels, important for blood pressure.

Hormones produced by the adrenal cortex, including androgens and estrogens.

Inner part of the adrenal glands that resemble nervous tissue and produces epinephrine and norepinephrine.

Endocrine part of the pancreas that includes alpha, beta, and delta cells producing glucagon, insulin, and somatostatin.

Hormone produced by beta cells that lowers blood glucose levels by facilitating cell absorption.

Male reproductive organs that produce sperm and androgens such as testosterone.

A gland that secretes parathyroid hormone (PTH) to regulate calcium levels.

A hormone secreted by the parathyroid glands that increases blood calcium levels.

The process of egg (ovum) development in females.

A hormone that stimulates uterine contractions during childbirth.

Hormones produced by the thyroid gland that regulate metabolism and energy levels.

A hormone produced by stomach wall cells that stimulates digestion.

Hormone that prompts pancreas to neutralize acidic chyme.

Hormone that triggers enzyme release from the pancreas and bile from the gall bladder.

The life-support system for a developing fetus providing hormones.

Hormone from the thymus crucial for developing T-lymphocytes.

Hormone produced by the pineal body that influences sleep cycles.

Hormone-like substances that influence various body functions including inflammation.

Immune cells that develop from primitive cells in the thymus.

An endocrine gland with 2 lobes, located near the larynx, producing hormones.

A prohormone that serves as a reservoir for thyroid hormones in circulation.

The active thyroid hormone that regulates various metabolic processes.

Hormone produced by thyroid C cells that lowers blood calcium levels.

Thyroid hormones regulate metabolic rate and maintain body temperature and metabolism of nutrients.

Glands located near kidneys; consist of the adrenal cortex and medulla.