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6. What controls the heart?
- A nerve plexus
- The somatic motor system
- The autonomic nervous system
- The central nervous system
7. Which is more susceptible to tissue necrosis?
- True end arteries
- Functional end arteries
8. What is the function of the pleural fluid?
- Provides surface tension and lubrication
- Keeps alveoli moist
- Lubrication only
- Keeps lungs and bronchioles moist
9. At what point does the trachea bifurcate into the bronchi?
- The level of the fifth rib
- Just as it enters the mediastinum
- Above the diaphragm
- The level of the second rib
10. Which lung generally has more lobes?
- Right lung
- Left lung
- They are both the same size
11. What is systole?
- Contraction, expelling blood
- Contraction of ventricles
- Relaxation, receiving blood
- Contraction of atria
12. What is the adventitia of the major blood vessels continuous with?
- Fibrous pericardium
- Epicardium
- Sternopericardiac ligament
13. What type of epithelium is found in the bronchii?
- Ciliated cuboidal epithelia
- Ciliated stratifed squamous epithelia
- Ciliated columnar epithelia
- Ciliated striated epithetlia
14. What is a ventricular diastole?
- Contraction of the ventricles, forcing blood into the major blood vessels
- Relaxation of the ventricles, allowing blood in from the atria
- Relaxation of the ventricles, closing the atrioventricular valves
15. What do the Purkinje fibres stimulate?
- The sinoatrial node
- Myocardium of the heart wall
- The aorta
16. Why are horses obligate nasal breathers?
- Epiglottis is located above the soft palate, forming an airtight seal between oropharynx and trachea
- Epiglottis is located below the soft palate, blocking the entrance to the trachea
- Trachea is located dorsal to oesphagus
- They're too dumb to breathe through their mouths
17. Where are anastamoses common?
- Near the heart
- Around joints
- Around the lungs
- The abdominal cavity
18. Which blood vessels has the largest tunica adventitia?
19. What is found at the base of the heart in a cow?
- Sternopericardiac ligament
- Phrenopericardiac ligament
20. What is the correct order of stimulation in a contraction?
- Sinoatrial node, atrioventricular bundle, atrioventricular node
- Sinoatrial node, atrioventricular node, His bundle
- Atrioventricular node, sinoatrial node, atrioventricular bundle