Bio 245 Klesath NCSU Exam 1 Endocrine Hormones Exam Success with the 2025 Sample Questions & Answers – Latest Update!

Functions of the Endocrine System - CORRECT ANSWER 1. Regulate development, growth, and metabolism 2. Maintain homeostasis of blood 3. Control digestive processes 4. Control reproductive activities Major endocrine glands - CORRECT ANSWER 1. Pituitary 2. Pineal 3. Thyroid 4. Adrenal Organs and tissues of endocrine system - CORRECT ANSWER 1. Hypothalamus 2. Skin 3. Heart 4. Liver 5. Stomach 6. Pancreas 7. Small intestine 8. Adipose connective tissue 9. Kidney 10. Gonads (testes and ovaries) Thyroid Stimulating Hormone (TSH) - CORRECT ANSWER Stimulates thyroid gland to release thyroid hormone (TH)Prolactin (PRL) - CORRECT ANSWER Regulates mammary gland growth and breast milk production in females; may increase testosterone secretion in males Follicle Stimulating Hormone (FSH) - CORRECT ANSWER Development of oocyte and ovarian follicle within ovaries, controls development of sperm in testes Luteinizing Hormone (LH) - CORRECT ANSWER Induces ovulation of secondary oocyte from ovarian follicle Adrenocorticotropic Hormone (ACTH) - CORRECT ANSWER Stimulates adrenal cortex to release cortisol Growth Hormone (GH) - CORRECT ANSWER Release insulin like growth factors (IGFs) from liver, GH and IGFs function synergistically inducing growth Pineal Gland's Hormone - CORRECT ANSWER Melatonin: regulate body's circadian rhythms, sexual maturation Thyroid Gland's Hormone - CORRECT ANSWER Thyroid Hormones (TH): increase metabolic rate of all cells, increases heat - T3 & T4Thyroid Hormones (TH) - CORRECT ANSWER Increase metabolic rate of all cells, increases heat - T3 & T4 - T4 made more but is converted to T3 Parathyroid Hormones (PTH) - CORRECT ANSWER - Secreted by chief cells - Increase blood calcium by: 1. Release of calcium from bone tissue 2. Decrease calcium in urine - Causes calcitriol hormone to form (increase Ca absorption in small intestine)