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The Cardiorespiratory, Endocrine, and Digestive Systems
Terms in this set (28)
The space in the chest between the lungs that contains all the internal organs of the chest (e.g., heart, esophagus) except the lungs.
The contractile components of a muscle cell; the myofilaments (actin and myosin) are contained within a myofibril.
The structural unit of a myofibril, composed of actin and myosin filaments between two Z-lines.
Superior chamber(s) of the heart that gathers blood returning to the heart.
Inferior chamber of the heart that pumps blood to the lungs and body.
What is pulmonic side of the hear responsible for
it receives blood from the body that is low in oxygen and high in carbon dioxide
What is systemic side of the hear responsible for
it has received oxygenated blood from the lungs that is high in oxygen and low in carbon dioxide, which it then pumps out to the rest of the body.
Found in the heart, these formations help hold together muscle cells.
Resting heart rate (RHR)
The number of heart beats per minute while at complete rest.
Atrioventricular (AV) node
Located between the atria and ventricles, this node delays the impulse from the sinoatrial node before allowing it to pass to the ventricles.
Sinoatrial (SA) node
Located in the right atrium, this node initiates an electrical signal that causes the heart to beat.
The amount of blood pumped out of the heart with each contraction.
The filled volume of the ventricle before contraction.
The volume of blood remaining in the ventricle after ejection.
Heart rate (HR)
The measurement of the number of times a heart beats within a specified time period (usually 1 minute).
When the heart rate is less than 60 beats per minute.
When the heart rate is greater than 100 beats per minute.
Cardiac output (Q)
The overall performance of the heart (heart rate × stroke volume).
Substances within the blood that attach to cells, aid in growth and development, and help with healing after injury
Cells within the body that divide and develop into specialized cells, such as brain cells, blood cells, heart cells, and bone cells.
A gland located in the brain that communicates with the pituitary gland
secretes melatonin, regulates circadian rhythms
produces hormones that regulate metabolism, body heat, and bone growth
a pair of endocrine glands that sit just above the kidneys and secrete hormones (epinephrine and norepinephrine) that help arouse the body in times of stress.
Which of the following is the primary energy source during vigorous exercise?
What term is used to describe the amount of energy required to maintain the body at rest?
Basal Metabolic rate
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