Animal Stress Physiology MCQS January 8, 2026April 6, 2024 by u930973931_answers 10 min Score: 0 Attempted: 0/10 Subscribe 1. What is the primary physiological response of animals to stress? (A) Increased heart rate (B) Decreased respiration rate (C) Increased appetite (D) Decreased adrenaline levels 2. Which hormone is often referred to as the “stress hormone” in animals? (A) Insulin (B) Cortisol (C) Thyroxine (D) Estrogen 3. What effect does chronic stress have on the immune system of animals? (A) Suppresses immune response (B) Enhances immune response (C) Has no effect on the immune system (D) Decreases blood pressure 4. Which of the following physiological changes occurs during the “fight or flight” response to stress? (A) Decreased blood glucose levels (B) Increased digestion and absorption (C) Dilation of blood vessels in the skin (D) Constriction of pupils 5. What is the role of the sympathetic nervous system in the stress response? (A) It decreases heart rate (B) It prepares the body for action (C) It activates the "rest and digest" response (D) It stimulates the release of cortisol 6. Which organ is particularly sensitive to the effects of stress hormones like cortisol? (A) Liver (B) Kidneys (C) Heart (D) Brain 7. What is the term for the adaptive response to stress that helps restore homeostasis? (A) Adaptation (B) Hypertrophy (C) Homeostasis (D) Allostasis 8. Which of the following is NOT a behavioral response to stress in animals? (A) Aggression (B) Enhanced learning (C) Increased grooming (D) Withdrawal 9. What is the term for the process by which stressors are perceived and interpreted by animals? (A) Adaptation (B) Appraisal (C) Coping (D) Allostasis 10. Which physiological system plays a key role in regulating the stress response? (A) Skeletal system (B) Endocrine system (C) Reproductive system (D) Lymphatic system