Endocrine system

Front

What is the primary function of glands in the endocrine system?

Back

Glands produce and secrete hormones that regulate various bodily functions.

Front

Define hormones.

Back

Hormones are chemical messengers produced by glands that travel through the bloodstream to target organs.

Front

What is the role of G proteins in cell signaling?

Back

G proteins act as relay proteins on the cytoplasmic side of a membrane, transmitting signals from receptors to target molecules.

Front

What hormone is produced by the pineal gland?

Back

Melatonin.

Front

What is the function of calcitriol in the body?

Back

Calcitriol helps regulate calcium levels in the blood and has an integrative effect with parathyroid hormone (PTH).

Front

Where are steroid hormone receptors typically located?

Back

Steroid hormone receptors are located in the cytoplasm of target cells.

Front

What is the difference between endocrine and exocrine glands?

Back

Endocrine glands secrete hormones directly into the bloodstream, while exocrine glands secrete substances through ducts to external surfaces.

Front

What is the role of the hypothalamus in the endocrine system?

Back

The hypothalamus regulates the pituitary gland and controls various endocrine functions through hormone release.

Front

What is the function of insulin?

Back

Insulin lowers blood glucose levels by facilitating the uptake of glucose into cells.

Front

What is the significance of feedback loops in the endocrine system?

Back

Feedback loops help maintain homeostasis by regulating hormone levels based on the body's needs.