BMS1032 cardio example Q's

HideShow resource information

1. the tricuspid valve:

  • guards the entrance to the aorta from the left ventricle
  • is composed of vascular smooth muscle
  • is open during diastole
  • prevents backflow of blood when standing up
  • guards the entrance to the left ventricle from the left atrium
1 of 16

Other questions in this quiz

2. the sympathetic nervous system when activated:

  • decrease blood flow
  • increases systemic vascular resistance (causes vasocontriction)
  • decreases the strength of cardiac contraction
  • releases Ach from postganglionic nerve fibres
  • decreases heart rate

3. clotting factors:

  • require Ca2+ as a cofactor in many instances
  • are important in platelet aggregation
  • depend on vitamin D for their production
  • some are produced in the liver by a vitamin B12 dependent process
  • catalyse the conversion of fibrin to thrombin

4. an increase in venous return to the heart:

  • increases ventricular stroke work
  • is termed hypotension
  • occurs when standing up
  • occurs after reduction of blood volume
  • increases filling of the ventricle during systole

5. the baroreceptor reflex:

  • increases heart rate in response to an increase of bp
  • is mediated by receptors in the heart
  • is an example of a negative feedback process
  • utilises chemoreceptors located in the brain
  • is responsible for the regulation of heart rate

Comments

No comments have yet been made

Similar Biology resources:

See all Biology resources »See all physiology resources »