Biology Forums - Study Force

When viewing a dissected heart, it is easy to visually discern the right and left ventricles by ________.
 
  A) tracing out where the auricles connect
  B) locating the base
  C) noticing the thickness of the ventricle walls
  D) finding the papillary muscles

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(Question 2) Small secondary lymphoid organs, which cluster along lymphatic vessels, are termed ________.
 
  A) lymph follicles
  B) lymph nodes
  C) lymphatics
  D) lacteals

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(Question 3) Which statement best describes arteries?
 
  A) Only large arteries are lined with endothelium.
  B) All contain valves to prevent the backflow of blood.
  C) All carry blood away from the heart.
  D) All carry oxygenated blood to the heart.

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(Question 4) The short-term controls of blood pressure, mediated by the nervous system and bloodborne chemicals, primarily operate via all but which of the following?
 
  A) chemoreceptors
  B) altering blood volume
  C) reflex arcs involving baroreceptors
  D) reflex arcs associated with vasomotor fibers

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(Question 5) Which of the following chemicals effects blood pressure for both the short and long term?
 
  A) atrial natriuretic peptide
  B) angiotensin II
  C) nitric acid
  D) aldosterone

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(Question 6) A patient with essential hypertension might have pressures of 200/120 mm Hg. This hypertensive state could result in all of the following changes except ________.
 
  A) decreased size of the heart muscle
  B) increased incidence of coronary artery disease
  C) increased work of the left ventricle
  D) increased damage to blood vessel endothelium

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(Question 7) The atrioventricular (AV) valves are closed ________.
 
  A) when the ventricles are in diastole
  B) while the atria are contracting
  C) when the ventricles are in systole
  D) by the movement of blood from atria to ventricles

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(Question 8) A mother takes her son to the doctor and describes the following symptoms that she has observed. The child is running a fever, has flu-like symptoms, and his lymph glands are very swollen and sore to the touch.
 
  Of what significance are the swollen and sore lymph glands?
  What will be an ideal response

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(Question 9) The most important of the secondary lymphoid organs in the body are the lymph nodes.
 
  Indicate whether the statement is true or false

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(Question 10) Which of the following is NOT part of the intrinsic conduction system of the heart?
 
  A) sinoatrial (SA) node
  B) atrioventricular (AV) node
  C) bundle branches
  D) atrioventricular (AV) valve

1) C

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2) B

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3) C

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4) B

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5) B

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6) A

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7) C

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8) When tissues are inflamed, such as due to a bacterial infection, lymphatic capillaries develop openings that permit the uptake of the pathogens. The inflammation and pain indicate lymph nodes infected by microorganisms.

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9) TRUE

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10) D

I can see it now, thanks for clarifying

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