The Respiratory System Air is taken in through the nose which is warmed, filtered and moistened by the cilia and mucus. Air then travels through the pharynx, past the larynx, into the trachea which has rigns of cartilage before making it's way to the branching bronchi that goes into both longs and ends in alveoli. The alveoli are millions of tiny elastic air sacs surrounded by cappilaries where gas exchange takes place. The diaphragm is the sheet of muscle at the bottom of the chest cavity that controls breathing. Asthma is a disorder where the bronchi swell due to an allergy. Emphesyma is a disease caused by smoking where the alveoli lost their elasticity and the person struggles to breath and take in oxygen, there is no cure. The Respiratory SystemThe Alveoli are the functional unit of the lungs. It is at the alveoli which are only one cell thick that gas exchange with the capillaries takes place via diffusion.
Review Sheet answer Key. #8 should be begins in the esophagus and ends in the small intestines.
The Digestive System and Enzymes Define these Key Terms:
Nutrition, nutrients, water, carbohydrates, fats, proteins, minerals, vitamins, enzymes, catalyst, substrate, active site, denature, products, synthesis, hydrolysis, absorption, digestion, mechanical digestion, chemical digestion, peristalsis, chime, digestive juices, protease, villi, amylase, pepsin, pancreatic enzymes, lipase, bile, emulsification Objectives:
|
Ms. JonesLiving Environment 2019-2020 |