Trachea is a straight tube extending uh to the mid-thoracic cavity, which divides at the level of

Trachea is a straight tube extending up to the mid-thoracic cavity, which divides at the level of

Trachea is a straight tube extending up to the mid-thoracic cavity, which divides at the level of

Trachea is a straight tube extending up to the mid-thoracic cavity, which divides at the level of

Trachea is a straight tube extending up to the mid-thoracic cavity, which divides at the level of

Which of the following statements about the human respiratory system are INCORRECT ? I. During swallowing , glottis can covered by a thin elastic cartilaginous flap called epiglottis to prevent the entry of food into the larynx. II. The trachea is a straight tube extending up to the mid- thoracic cavity, which divides at the level of the fourth thoracic vertebra into a right and left primary bronchi. III. The trachea , primary secondary and tertiary bronchi, and initial bronchioles are supported by incomplete cartilaginous rings made up of hyaline cartilage. IV. The respiratory part transports the atmospheric air to the alveoli, clear it from foreign particles, humidifies and also brings the air to body temperature.

Which of the following is most suitable description for trachea? (a) Straight tube, extending upto the mid-thoracic cavity and divides at the level of 5th thoracic vertebra. (b) Straight tube, extending upto the mid-thoracic cavity and divides at the level of 3rd thoracic vertebra. (c) Straight tube, extending upto the neck and divides at the level of 5th cervical vertebra (d) Curved tube, extending upto the mid-thoracic cavity and divides at the level of 5th thoracic vertebra.

Trachea divides at the level of :