Answer:
1. Ends of the respiratory branches are called alveoli.
2. C. To control blood flow to different areas of the body depending on activities
Explanation:
1. The trachea divides into left and right primary bronchi which in turn divide multiple times upon entering the lungs and make the bronchial tree.
The final branches of the bronchial tree are the terminal bronchioles that lead to alveoli. The alveoli are the balloon-shaped structures and serve as the site of gas exchange between the blood and inhaled air.
2. The opening and closing of sphincters of capillary beds regulate the direction of blood flow. The opening of sphincters allows the blood to flow into associated branches of capillary beds while closed sphincters direct the blood from arterioles to venules via thoroughfare channel.
This local change in blood flow is responsible for the autoregulation of blood flow to different tissues to match their respective metabolic demands. For example, during physical activity, more blood is directed to skeletal and cardiac muscles.
I think is the first and second!!
Answer:
absorb the oxygen from water .. then swallowed by the mouth and pumped out the gills.... then pumped out behind the operculum or gill cover
Explanation:
just did it
The tectonic plates move and shift due to Mantle convection
Mantle convection is caused by the magma in the mantle of the earth constantly being cooled near the crust and heated the closer it gets to the core and like normal convection the cool magma sinks towards the crust and the hot magma rises to the crust. this happens in a circular motion causing the crust to shift with the magma
