35. The first blood vessels to branch from the aorta are the a) Pulmonary b) Cor
ID: 3513724 • Letter: 3
Question
35. The first blood vessels to branch from the aorta are the a) Pulmonary b) Coronary c) Circumflex d) Carotid e) subclavian arteries 36. The ciliary body a) includes the ciliary muscles and processes b) Produces the vitreous humor c) is part of the iris of the eye d) Is part of the sclera e) All of the above 37. The blink reflex is designed to a) maintain balance b) Regulate pupil size c) provide clearer vision d) keep the eyes moist e) orient the eyes 38. As an object moves closer to the eye, as in the sketch below, What happens? a) the lens flattens b) the eyes rotate medially c) the ciliary muscle relax d) the diameter of the pupil increases e) the eye blinks 39. As an object moves closer to the eye, as in the sketch below. What happens? a) The lens flattens b) The eyes rotate medially c) The ciliary muscles relax d) The diameter of the pupil increases e) The eye blinks. 40. The pacemaker cells of the heart are located in the a) Purkinje fibers b) SA node c) AV node d) wall of the left ventricle e) both the left and right ventriclesExplanation / Answer
ANSWER 35. b. CORONARY arteries -Because before pumping the oxygenated blood to all parts of the body , heart supplies its own muscle (myocardium) through coronary arteries.
ANSWER 36. a.CILIARY body includes ciliary muscles and ciliary processes.and it produces aqueous humor.
ANSWER 37. d. BLINK reflex of the eye is designed to keep the eyes moist and also to remove the dust and microbes entering the eye thereby protecting eye from infections and also preventing the dryness of the eye.
ANSWER 38.EYES ROTATE medially if the object is moved closer to the eye in a straight direction infront of the eye.
ANSWER 39.PUPILLARY diameter increases if the object is brought closer to the eye suddenly.
ANSWER 40 b.SA NODE-Sinoatrial node is called as the natural heart pacemaker as it is the area of the heart where the depolarization takes place to initiate the action potential to start myocardial contraction.
ANSWER 41. c. SYMPATHETIC and PARASYMPATHETIC-The heart is supplied by the autonomic nerves.where as sympathetic activation increases the heart rate and parsympathetic decreases the heart rate and relaxes the muscle.
ANSWER 42.b. PULMONARY SEMILUNAR VALVE-The deoxygenated blood which is entered in to right ventricle is pumped in to the pulmonary artery through a semilunar valve called pulmonary valve and there by it is carried to the lungs to convert in to oxygenated blood by gaseous exchange.
ANSWER 43. b. MIDDLE EAR-Eustachian or the auditory tube functions in the equillibrium or balancing of air pressure between middle ear and the atmosphere.
ANSWER 44.a.SPIRAL ORGAN OR ORGAN OF CORTI-It acts as the organ of hearing and it closely associated with hearing receptors.
ANSWER 45..d.Loss of transparency of the eye crystalline lens leads to cataract where the lens is thickened and it is the major manifestation of oldage which occurs with ageing and is the common problem of geriatrics.
ANSWER46. c.SYSTOLIC PRESSURE-In measuring the blood pressure , average values are considered as 120/80mm of Hg where 120 is the systolic pressure occurs due to ventricular contraction.and 80 is considered as diastolic pressure occures due to ventricular relaxation or dilatation.
Related Questions
drjack9650@gmail.com
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.