anatomy and physiology online practice Exam Questions And Answers

which of following tissues attaches muscles to bone? -fascia -tendon -ligamnets -bursa - ANS tendon which of the following ions is most abundant in extracellular fluid? -calcium -chloride -sodium -potassium - ANS sodium which of the following does the respiratory system eliminate when there is an excess of hydrogen ions in the body? -oxygen -carbon dioxide -bicarbonate -lactic acid - ANS carbon dioxide in a normally functioning cardiovascular system, where does the heartbeat originate? -atrioventricular node -bundle of His -purkinje fibers -sinoatrial node - ANS sinoatrial node blood cells are produced by which of the following? -red bone marrow -lamellae -lacunae -yellow bone marrow - ANS red bone marrow which of the following is the iron-containing component of a red blood cell? -fibrinogen -albumin -hemoglobin -erythropoietin - ANS hemoglobin which of the following is the function of angiotensin II in the regulation of blood pressure? -vasoconstriction -vasodilation -increased heart rate -decreased heart rate - ANS vasoconstriction which of the following hormones or enzymes is involved in fluid balance and is produced by the kidneys? -renin -aldosterone -antidiuretic hormone -angiotensin I - ANS renin which of the following may indicate a hypersecretion of thyroid hormones? -weight loss -bradycardia -cold intolerance -lethargy - ANS weight loss peripheral vasodilation results in heat loss through which of the following processes? -conduction -convection -radiation -evaporation - ANS radiation bile aids in the digestion of which of the following? -fat -protein -vitamins -carbohydrates - ANS fat which of the following structures, located at the end of the ear canal, vibrates when sound waves strike it? -acoustic meatus -cochlea -eustachian tube -tympanic membrane - ANS tympanic membrane which of the following structures prevents food from being aspirated into the lungs? -larynx -epiglottis -esophagus -nasopharynx - ANS epiglottis which of the following types of muscle tissue is under voluntary control? -smooth -cardiac -visceral -skeletal - ANS skeletal which of the following electrolytes plays an essential role in the clotting of blood? -sodium -magnesium -calcium -potassium - ANS calcium which of the following structures comes after the ascending colon? -ileocecal valve -transverse colon -rectum -appendix - ANS transverse colon which of the following is a result of stimulation of the sympathetic nervous system? -decreased blood flow to the skeletal muscles -increased cardiac output -decreased respiratory rate -increased urinary output - ANS increased cardiac output which of the following structures is located between the descending colon and the rectum? -sigmoid colon -the cecum -the jejunum -ascending colon - ANS sigmoid colon