BIO 254 LAB 2024 Questions & Answers 100% Correct Verified

The cardiovascular center is located - medulla oblongata All deoxygenated blood returning from the systemic circulation flows into the: - Right Atrium Which of the following layers of the pericardium is the dense connective tissue structure that plays an important role in protecting the heart and keeping it in place in the mediastinum? - Fibrous pericardium Degradation of the chordae tendineae would most likely result in - Valvular Prolapse (valve fails to close properly) Max, a 16 year old, has grown 14 inches taller than his identical twin brother this year. What organ or organ region do you suspect may not be functioning properly? - Anterior Pituitary The correct order of sequence of structures that allows the normal sequence of excitation to progress through the heart - SA Node, AV node, Bundle of HIS, Bundle Branches, Purkinje fibers. The right side of the heart plays a role in ______________, while the left side of the heart plays a role in ____________. - Pulmonary circulation; systematic circulation Which of the following hormones stimulates cells of the anterior pituitary to secrete FSH and LH? - GnRH- Gonadotropin-releasing hormone Daniel is a 24 year old male, admitted to the hospital with symptoms similar to osteoporosis. Hypersecretion of which of the following hormones might be the cause for his condition? - Parathyroid Hormone Sara's MAP is - 109mmHgWhich of the following statements about cardiac output is NOT CORRECT? - Parasympathetic nerve stimulation will increase the heart rate and thus increases the cardiac output. The S-T segment of an ECG represents - The plateau phase of the myocardial action potential. Bradycardia is defined as - slower than normal heart rate How many hormones do the five types of anterior pituitary cells secrete? - 7 Localized weakening of the blood vessel wall causing the side of the vessel to bulge is - an aneurysm A feature of cardiac muscle that joins adjacent cells together is - intercalated discs After performing the Allen's test, it is observed that only the first three digits regain normal color when the radial artery is uncompressed while the lunar artery is still occluded - This means there is an anastomosis between the radial and the ulnar artery What is an example of an anastomosis - Circle of Willis An increase in the formation of glycogen by the liver is an important effect of - Insulin Which two numbers are used to determine pulse pressure? - Systolic and Diastolic Pressure Which of the following would result from a thyroidectomy (removal of the thyroid gland) - Decreased T3 and T4 secretion/ Decreased calcitonin secretion Which o