Please answer all questions

1		The epiglottis prevents food from entering the larynx.
			A)	True
			B)	False
2		The trachea is held open by C-shaped cartilaginous rings.
			A)	True
			B)	False
3		Smoking destroys the cilia in the trachea.
			A)	True
			B)	False
4		The bronchi branch into smaller passages called bronchioles.
			A)	True
			B)	False
5		During an asthma attack, the bronchioles dilate.
			A)	True
			B)	False
6		During inspiration, diaphragm and rib muscles contract, causing the pressure inside the lungs to increase.
			A)	True
			B)	False
7		The fact that the pH of the blood in the lungs is a little higher and the temperature of the lungs a little cooler than the normal body allows hemoglobin to take up more oxygen.
			A)	True
			B)	False