Endocrine and Exocrine Glands Overview

What is the main difference between endocrine and exocrine glands?

• Endocrine glands produce enzymes, while exocrine glands produce hormones.

• Endocrine glands release secretions directly into the bloodstream, while exocrine glands release secretions through ducts.

• Endocrine glands are found only in the brain, while exocrine glands are found throughout the body.

• Endocrine glands control growth, while exocrine glands control digestion.

Which of the following organs has both endocrine and exocrine functions?

• Thyroid

• Pineal Gland

• Pancreas

• Adrenal Glands

How do hormones typically affect target cells?

• They physically enter the target cell and change its structure.

• They bind to specific receptors on target cells, triggering a response.

• They directly destroy target cells that are not functioning correctly.

• They create new target cells to replace old ones.

Which hormone, secreted by the posterior pituitary, is important for uterine contractions during childbirth?

• Growth Hormone (GH)

• Prolactin (PRL)

• Oxytocin

• Antidiuretic Hormone (ADH)

What is the main function of the hormones Thyroxine (T4) and Triiodothyronine (T3) released by the thyroid gland?

• To lower blood calcium levels.

• To regulate the body's metabolic processes.

• To help T-cells develop.

• To prepare the body for a fight or flight situation.

Which pair of hormones works together to control the amount of calcium in the blood, but in opposite ways?

• Thyroxine and Thymosin

• Epinephrine and Norepinephrine

• Calcitonin and Parathyroid Hormone

• Insulin and Glucagon

The pancreas produces two important hormones that manage blood sugar levels. What are they?

• Estrogen and Progesterone

• Cortisol and Aldosterone

• Insulin and Glucagon

• Epinephrine and Norepinephrine

A person with hypothyroidism has an underactive thyroid gland. What is a common symptom of this condition?

• High blood sugar.

• Feeling very tired.

• A very fast heartbeat.

• Too many T-cells in the body.