Cardiovascular System
This red pigment carries oxygen in the blood
What is hemoglobin
This is the main organ of the respiratory system
What are the lungs
This organ is the control center of the nervous system
What is the brain
This gland is often called the "master gland" of the endocrine system
This protein filament slides over actin during muscle contraction
What is myosin
These vessels carry blood away from the heart
What are arteries
This muscle contracts to draw air into the lungs
What is the diaphragm
These cells carry electrical signals in the nervous system
What are neurons
This hormone regulates blood sugar levels and is produced in the pancreas
What is insulin
This type of muscle is found in the walls of hollow organs
What is smooth muscle
The two upper chambers of the heart
What are the atria
This structure prevents food from entering the trachea during swallowing
What is the epiglottis
This part of the brain controls balance and coordination
What is the cerebellum
The adrenal glands sit on top of these organs
What are the kidneys
These muscles work in pairs: one contracts while the other relaxes
What are antagonistic muscles
The valve prevents blood from flowing back into the left atrium
What is the mitral/bicuspid valve
The small air sacs where gas exchange occurs
What are the alveoli
This insulating layer speeds up nerve impulse transmission
What is the myelin sheath
This hormone is responsible for the fight-or-flight response
What is adrenaline (or epinephrine)
This muscle group is also known as the rotator cuff
What are the SItS muscles
The name for the circulation loop that carries blood to the lungs
What is pulmonary circulation
This term describes the tendency of the thorax and lungs to return to their pre-inhalation size
What is elastic recoil
The part of the nervous system that controls involuntary actions
What is the autonomic nervous system
This gland regulates metabolism through the secretion of T3 and T4
What is the thyroid gland
Gemellus superior and inferior are part of this muscle group
What are the deep six rotators