HESI A2 Practice Test 2023 Questions with 100% CORRECT ANSWERS THE FROM EXPERT Which structure in the brain is responsible for arousal and maintenance of consciousness? A. The Midbrain B.The Reticular Activating System C. The Diencephalon D. The Limbic

HESI A2 Practice Test 2023 Questions with 100% CORRECT ANSWERS THE FROM EXPERT Which structure in the brain is responsible for arousal and maintenance of consciousness? A. The Midbrain B.The Reticular Activating System C. The Diencephalon D. The Limbic System The triceps reflex Correct Answer forces contraction of the triceps and extension of the arm Which cranial nerve is responsible for hearing and balance? A. CN III B. CN V C. CN VII D. CN XII Which gland is responsible for the regulation of calcium levels? A. Parathyroid B. Pituitary C. Adrenal D. Pancreas Which hormone is predominantly produced during the luteal phase of the menstrualcycle The pancreas secretes what hormone in response to low blood glucose levels? A. Insulin B. Glucagon C. Somatostatin D. Amylase Correct Answer B. Glucagon Which layer of the heart contains striated muscle fibers for contraction of the heart? A. Pericardium B. Epicardium C. Endocardium D. Myocardium Which part of the cardiac conduction system is the most distal from the initial impulse generation and actually conducts the charge throughout the heart tissue? A. SA B. AV C. Purkinje Fibers D/ Bundle of His Correct Answer C. Purkinje Fibers Which blood vessel carries oxygenated blood back to the heart? Correct Answer Pulmonary vein Which granulocyte is most likely to be elevated during an allergic response? A. Neutrophil B. Monocyte C. Eosinophil D. Basophil Which vitamin is essential for proper formation of clotting factors? Vitamin K Afferent lymph vessels carry lymph: A. Toward the spleen B. Away from the spleen C. Toward the lymph node D. Away from the lymph node Cricoid cartilage is found on the : A. Alveoli B. Bronchioles C. Bronchi D. Trachea Which of the following is NOT found in mediastinum? A. Xiphoid process B. Thymus C. Trachea D. Vagus nerve What is the proper order of the divisions of the small intestine as food passes through the gastrointestinal tract? A. Ileum, duodenum, jejunum B. Duodenum, ileum, jejunum C. Duodenum, jejunum, ileum D. Ilem, jejunum, duodenum Which chemicals are responsible for conveying an impulse along a nerve cell? Sodium and potassium Which type of genetic mutation occurs when a piece of DNA breaks off the chromosome