Ryan is a long-distance swimmer. Ryan can expect his speed to drop off at an accelerating pace when he reaches about age

The _______________ is a structure in the brain stem responsible for certain automatic functions, such as breathing and heart rate

a. reticular activating system b. pons c. medulla d. cerebellum

Which part of the brain is located at the base of the skull and looks like a stalk rising out of the spinal cord?

a. amygdala b. brain stem c. hypothalamus d. thalamus