Skip to content
1. the ECG:
- is increased as the strength of the heart beat increases
- contains a p wave of great magnitude than the qrs complex
- contains a r wave caused by ventricular repolarisation
- occurs at the same rate as the arterial pulse in a healthy individual
- is measured with a stethoscope
1 of 16
Other questions in this quiz
2. the tricuspid valve:
- prevents backflow of blood when standing up
- guards the entrance to the left ventricle from the left atrium
- is composed of vascular smooth muscle
- is open during diastole
- guards the entrance to the aorta from the left ventricle
3. human blood:
- normally has a pH range of 7.0-7.1
- volume is about 10L
- normally has a K conc between 20-25mmol/L
- is composed of about 40-45% cells, with the remainder plasma
- contains nucleated RBCs
4. the baroreceptor reflex:
- utilises chemoreceptors located in the brain
- is an example of a negative feedback process
- is mediated by receptors in the heart
- increases heart rate in response to an increase of bp
- is responsible for the regulation of heart rate
5. the sympathetic nervous system when activated:
- releases Ach from postganglionic nerve fibres
- decreases heart rate
- decrease blood flow
- increases systemic vascular resistance (causes vasocontriction)
- decreases the strength of cardiac contraction
Comments
No comments have yet been made