Case 1 Study Questions and Answers
The heart is the central unit that pumps blood into 2 circuits, the pulmonary and systemic circuits.
Define cardiovascular function
sends deoxygenated blood to the lungs for remo
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Case 1 Study Questions and Answers
The heart is the central unit that pumps blood into 2 circuits, the pulmonary and systemic circuits.
Define cardiovascular function
sends deoxygenated blood to the lungs for removal of co2 and reoxygenates the blood
Define the pulmonary circuit
carries oxygenated blood through the aorta and around the body to supply oxygen to all our organs and tissues
Define the systemic circuit
True
True or false? The heart acts as a 2 sided pump, the right side pumping blood to the lungs and the left side pumping blood to the body.
The heart is innovated by the autonomic nervous system
What is the neuronal control of the heart?
Via the sympathetic and parasympathetic systems
How is the heart extrinsically innervated?
Sympathetic nerves innervate all of the heart, the pacemakers and the cardiac muscle
Speed up heart rate and force of contraction
Acts at the cardio acceleratory centre in the medulla
What is the role of the sympathetic nervous system in heart innervation?
Parasympathetic nerves only innervate the pacemakers
Acts at the cardioinhibitory centre in the medulla
Relaxes down heart rate and force of contraction
What is the role of the parasympathetic nervous system in heart innervation?
To T1 to T5 in the spinal cord chain
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