Endocrine System Quiz: Hypothalamus Functions

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What is the function of the regulatory hormones produced by the hypothalamus?

To control the production and release of hormones from other endocrine glands.

To directly stimulate or inhibit the activity of target cells.

To regulate the production and release of neurotransmitters in the brain.

To control the production and release of hormones from the pituitary gland. (correct)

Which of these is NOT a function of the hypothalamus?

Regulating body temperature.

Stimulating the release of digestive enzymes. (correct)

Controlling blood pressure.

Monitoring blood hormone levels.

How are regulatory hormones transported from the hypothalamus to the pituitary gland?

Through the lymphatic system.

By diffusion across tissue boundaries.

Through a specialized network of blood vessels. (correct)

Via a direct neural connection.

What is the primary mechanism by which steroid hormones alter gene expression in target cells?

By acting as transcription factors that bind to DNA. (B) Signup and view all the answers

What is the primary difference between the action of steroid hormones and non-steroid hormones?

Steroid hormones act directly on DNA within the nucleus, while non-steroid hormones act through a signaling cascade. (C) Signup and view all the answers

Which of the following hormones is responsible for the release of growth hormone (GH)?

Growth hormone releasing factors (GHRF) (B) Signup and view all the answers

What is the effect of prolactin inhibiting factor (PIF) on the anterior pituitary?

Inhibits the release of prolactin (B) Signup and view all the answers

Which of the following hormones is NOT produced by the hypothalamus?

Insulin (C) Signup and view all the answers

Which of the following hormones is stored and released by the posterior pituitary?

Antidiuretic hormone (ADH) (B) Signup and view all the answers

What is the effect of gonadotrophin releasing hormone (GnRH) on the anterior pituitary?

Stimulates the release of FSH and LH (D) Signup and view all the answers

Endocrine System

A system of ductless glands that secrete hormones into the bloodstream.

Hypothalamus

A brain region that controls the endocrine system and regulates key functions like hunger and sleep.