Major Heart Vessels Vena Cavae return blood to the right atrium
from the systemic circulation Pulmonary artery delivers
deoxygenated blood to the lungs (from rt ventricle) Pulmonary vein
returns oxygenated blood to the heart (left atrium) Aorta delivers
blood to the periphery (from left ventricle)
Slide 5
Heart Valves Insure unidirectional flow of blood through the
heart
Slide 6
Pathway of Blood Through the Heart and Lungs Right atrium valve
right ventricle Right ventricle valve pulmonary arteries lungs
Lungs pulmonary veins left atrium Left atrium valve left ventricle
Left ventricle valve aorta Aorta systemic circulation
Slide 7
Circulatory System Arteries continuously branch into smaller
vessels and then into capillaries Capillaries are where gas and
nutrient exchange occurs Capillaries empty into veins that branch
together to return blood to heart
Slide 8
Anatomy of the Respiratory System Nose Nasal cavity Pharynx
Larynx Trachea Bronchi (and their smaller branches) Lungs (which
contain air sacs called alveoli)
Slide 9
Bronchial Tree: Bronchi and Bronchioles The trachea divides
into 2 bronchi which enter the lungs, bronchioles are extensions of
the bronchi
Slide 10
Bronchial Tree: Bronchi and Bronchioles During exercise:
Activity of the autonomic nervous system and endocrine system
causes relaxation of smooth muscle in the bronchioles, which
dilates the airways Because air reaches the lungs more quickly,
lung ventilation increases (improves)
Slide 11
The Three Energy Systems
Slide 12
INTERACTION OF ENERGY SYSTEMS ILLUSTRATING THE PREDOMINANT
ENERGY SYSTEM
Slide 13
Lactate Lactic acid is converted to lactate resulting in an
increased muscle acidity which can impair muscle performance
Lactate itself is not detrimental, nor does it cause soreness
Lactate can be used by the body to produce more ATP or glucose
