2024 Updated Csfa Basic Science Exam Test Questions With Correct Answer

The inner lining of the mucosa within the gastrointestinal tract is composed of: A. Smooth striated muscle B. Areolar connective tissue C. Simple columnar epithelium D. Elastic connective tissue C. Simple columnar epithelium Lymph channels run parallel to which structures? A. Nerves B. Veins C. Arteries D. Ligaments Veins Body temperature is regulated by the: A. Pons B. Cerebellum C. Midbrain D. Hypothalamus Hypothalamus Which two electrolytes are essential for normal cardiac contractions? A. Phosphate and chloride B. Magnesium and sodium C. Bicarbonate and sulfate D. Potassium and calcium Potassium and calcium Water constitutes what average normal percentage of total body weight? A. 20-40% B. 50-70% C. 70-85% D. 15-25% 50-70% The thyroid gland consists of right and left lobes joined by the: A. Larynx B. Isthmus C. Parathyroid gland D. Cricoid cartilage Isthmus Langer lines generally lie perpendicular to the direction of: A. Skin folds B. Underlying muscle tension C. A midline incision D. Movement of the bone joints Underlying muscle tension The arterial supply to the intestinal tract, with the exception of the stomach, duodenum, and distal rectum, is derived from the: A. Superior and inferior mesenteric arteries B. Cystic artery C. Gastroduodenal artery D. Hepatic artery Superior and inferior mesenteric arteries Excessive secretion of growth hormones in adults causes: A. Splenomegaly B. Acromegaly C. Cardiomegaly D. Hepatomegaly Acromegaly The inner lining of the mucosa of the gastrointestinal tract is composed of: A. Smooth muscle B. Areolar connective tissue C. Epithelium D. Elastic connective tissue Epithelium The large artery that arises from the left side of the aortic arch and descends into the arm is the: A. Subclavian B. Carotid C. Brachiocephalic D. Radial Subclavian An enzyme active in the digestion of starches is: A. Amylase B. Trypsin C. Lipase D. Lactase Amylase The normal pH of blood is: A. 3.5-4.5 B. 7.3-7.4 C. 8.5-9.0 D. 9.5-10.5 7.3-7.4 Which cells secrete pepsinogen? A. Islands of Langerhans B. Beta C. Chief D. Parietal Chief Which of the following veins drains the intracranial venous sinuses to veins on the outside of the skull? A. Emissary B. Middle cerebral C. Cerebellar veins D. Radial veins Emissary Which of the following arteries supplies blood to the brain? A. Anterior and middle cerebral arteries B. Vertebral and internal carotids C. External and internal carotids D. Occipital and thyrocervical Vertebral and internal carotids Which of the following arteries divides into the anterior and middle cerebral arteries? A. Internal carotid B. External carotid C. Vertebral D. Basilar Internal carotid Which of the following arteries is a direct branch of the of the internal carotid? A. Vertebral B. Aorta C. Middle cerebral D. Facial Middle cerebral The lateral ventricles within the cerebral hemisphere communicate with the third ventricle through the opening called: A. Foramen of Monro B. Foramen ovale C. Foramen of Vesalius D. Foramen of magnum Foramen of Monro The third ventricle of the brain empties into the fourth ventricle through the: A. Aqueduct of Sylvius B. Choroid plexuses