Gas Exchange and Breathing
What gas do cells produce that must be exhaled
Carbon dioxide
What is the thick muscular layer of the heart called
myocardium
What percent of blood is plasma?
about 55%
Which circulatory system is found in insects
Open circulatory system
What Organ regulates blood pressure with fluid balance?
Kidneys
What process moves gases across alveolar and capillary walls
Diffusion
whats the role of the SA node in the heart?
It acts as the pacemaker
What type of blood cells help stop bleeding?
Platelets
What kind of system do humans human
What is the average adult heart rate?
60-100 BPM
What flap prevents food from going into the trachea
Epiglottis
It pumps blood to the entire body
What do red blood cells lack that most cells have?
Nucleus and Mitochondria
2
Regular Exercise
What structure helps regulate your breathing rate?
Brainstem
What causes the lub-dub sound of the heart
Closing of valves
What protein maintains osmotic balance in blood?
Albumin
Amphibians have how many heart chambers?
3
What is the smallest airway in the lungs?
Bronchioles
What causes air to enter the lungs during inhalation
Diaphragm contraction and pressure decrease
What is the name of the outside layer of the heart?
Pericardium
What is another name for red blood cells?
Erythrocytes
Which system works closely with the respiratory system to deliver oxygen?
circulatory system.
What cells are responsible for gas exchange in tissues
Red Blood cells