Which structure(s) is/are known as false vocal cords? A) extrinsic ligaments B)
ID: 100473 • Letter: W
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Which structure(s) is/are known as false vocal cords? A) extrinsic ligaments B) vocal folds C) intrinsic ligaments D) vestibular folds E) vocal ligaments Which of the following structures is C-shaped? A) cricoid cartilages B) thyroid cartilage C) tracheal cartilages D) corniculate cartilages E) arytenoid cartilages Which structures divide to form segmental A) carina B) tertiary bronchi C) primary bronchi D) secondary bronchi E) lobar bronchi Each bronchopulmonary segment consists of the lung tissue associated with how many tertiary bronchi? A) five B) three C) one D) four E) two Bronchodilation is caused by sympathetic activation and the release of which neurotransmitter? A) acetylcholine B) epinephrine C) serotonin D) dopamine E) nitrous oxide The walls of terminal bronchioles are dominated by which tissue type? A) smooth muscle B) hyaline cartilage C) skeletal muscle D) pseudostratified ciliated columnar epithelium E) elastic cartilageExplanation / Answer
9) D.glottis - It is a narrow opening through which inhaled air leaves the pharynx and enters the larynx.
10)C.Cricoid Cartilage - The cricoid cartilage is a complete ring of hyaline cartilage. Hyaline Cartilage except the Epiglottis, because It is made of elastic cartilage.
11) D.vestibular fold - They occur horizontally along the lateral wall of the laryngeal cavity and called as the false vocal folds. More widely separated than the true vocal folds. Superior to the true vocal folds. Made up of vestibular ligament and mucous membrane.
12) C. Tracheal cartilage - In the trachea, tracheal rings are present ,also known as tracheal cartilages.The trachea is surrounded by rings of hyaline cartilage; these rings are incomplete and C-shaped.
13) E.Lobar bronchi - Segmental bronchi or teritary bronchi branched off from Lobar bronchi.
14) C.One - Each tertiary bronchus serves a particular bronchopulmonary segment.
15) B.epinephrine - The adrenergic receptors are G protein-coupled receptors which are targets of especially norepinephrine and epinephrine (adrenaline). This receptor agonists, such as epinephrine is capable of causing bronchodilation.
16) A smooth muscle tissue - Terminal bronchioles are smaller branches of the tertiary bronchus and walls are dominated by smooth muscle tissue.
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