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Physiology > Lab 10 - Cardiovascular regulation > Flashcards

Lab 10 - Cardiovascular regulation Flashcards

1
Q

Hematocrit (venous)

  1. Dog
  2. Cat
  3. Rabbit
  4. Domestic fowl
A

(l/l)

1-4: 0.35-0.45

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2
Q

Blood clotting

  1. Dog
  2. Cat
A

(min)

  1. Dog: 6-7
  2. Cat: 7-9
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3
Q

RBC sedimentation rate

  1. Dog
  2. Cat
  3. Rabbit
  4. Domestic fowl
A

(mm/hour)

  1. Dog: 5-10
  2. Cat: 5-10
  3. Rabbit: ND
  4. Domestic fowl: 1-4
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4
Q

Lymphocyte

  1. Dog
  2. Cat
  3. Rabbit
  4. Domestic fowl
A

%

  1. Dog: 35 (15-45)
  2. Cat: 35 (15-45)
  3. Rabbit: 50 (40-60)
  4. Domestic fowl: 60 (55-75)
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5
Q

Neutrophil

  1. Dog
  2. Cat
  3. Rabbit
  4. Domestic fowl
A

%

  1. Dog: 60 (55-75)
  2. Cat: 60 (55-75)
  3. Rabbit: 50 (40-60)
  4. Domestic fowl: 35 (15-45)
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6
Q

Blood glucose

  1. Dog
  2. Cat
  3. Rabbit
  4. Domestic fowl
A

mmol/l
1-3: 5 (3-5.5)
4. Domestic fowl: 10 (9-11)

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7
Q

RBC count

A

(x10^12/L)
1-3: 6-12
4. Domestic fowl: 3

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8
Q

Reticulocytes

  1. Dog
  2. Cat
  3. Rabbit
  4. Domestic fowl
A

%

  1. Dog: 0-5
  2. Cat: 0-5
  3. Rabbit: 0
  4. Domestic fowl: 0
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9
Q

WBC count

  1. Dog
  2. Cat
  3. Rabbit
  4. Domestic fowl
A

(x10^9/L)
1-3: 5-15
4: 15-30

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10
Q

RBC lifespan

  1. Dog
  2. Cat
  3. Rabbit
  4. Domestic fowl
A

(days)

  1. Dog: 120
  2. Cat: 60
  3. Rabbit: 60
  4. Domestic fowl: 30
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11
Q

Heart rate

  1. Dog
  2. Cat
  3. Rabbit
  4. Domestic fowl
A

(/min)

  1. Dog: 75-100
  2. Cat: 120-160
  3. Rabbit: 150-200
  4. Domestic fowl: 140-400
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12
Q

Respiratory rate

  1. Dog
  2. Cat
  3. Rabbit
  4. Domestic fowl
A

(/min)

  1. Dog: 15-30
  2. Cat: 20-30
  3. Rabbit: 50-60
  4. Domestic fowl: 10-40
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13
Q

Body temp.

  1. Dog
  2. Cat
  3. Rabbit
  4. Domestic fowl
A
  1. Dog: 38.2-39.0
  2. Cat: 38.5-39.2
  3. Rabbit: 38.5-39.5
  4. Domestic fowl: 40-43
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14
Q

Why does acetylcholine decrease blood pressure?

A

(Sets free Nitric Acid and inhibits cardiac activity)

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15
Q

What is the effect of compressing both left and right vagus nerve?

A

(respiration stops, then deeper and less frequent, heart rate increase)

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16
Q

What is vasomotor center?

A

(centers in the brainstem responsible for circulation)

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17
Q

EDRF?

A

(endothelium derived reflex factor)

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18
Q

EDCF?

A

(endothelium derived contractil factor)

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19
Q

Location and function of n. phrenicus?

A

(C4 segment, function is modulated by inspiratory neurons)

20
Q

What happen to respiration when stimuli of n. vagus?

A

(irregular respiration)

21
Q

Which afferent nerve transfers stimuli from n. vagus to bronchopulmonary center

A

(expiratory neurons of pons respiratorygroup)

22
Q

What happens if you compress carotid artery cranial to carotid sinus?

A

(Increase blood pressure)

23
Q

The 2 centers in the pons?

A

(pneumotaxic and apneustic)

24
Q

Which receptors does epinephrine effect?

A

(beta 2 adrenergic receptors, and alpha 1 as well)

25
Q

What causes vagus apnoe?

A

(stimulating vagus, due to hering-breuer reflex)

26
Q

What happens if you compress carotid artery caudal to carotid sinus?

A

(slow increase of systemic blood pressure)

27
Q

Name the respiratory centres in the brainstem?

A

(dorsal and ventral respiratory groups)

28
Q

What effect does short term stimulation of the vagus nerve have on blood pressure?

A

(heart rate decrease, blood pressure decrease for a while)

29
Q

What does short time instrintic control depend on?

A

(myogenic control of diameter if ateriols and metarteriols)

30
Q

Which area of the brain show spontaneous sympathetic activity?

A

(the pressor area)

31
Q

Which vasomotor centre shows spontaneous activity?

A

(Pressor area)

32
Q

What is the role of apneustic center?

A

(Inspiration)

33
Q

Which stump of the depressor nerve do you stimulate to decrease blood pressure?

A

(vagus nerve)

34
Q

Where are expiritory neurons located in brainstem?

A

(ventral respiratory group)

35
Q

Afferent nerve of Hering-Breuer reflex?

A

(vagus nerve)

36
Q

Where are baroreceptors found?

A

(aortic arch and carotic sinus)

37
Q

Which nerve transmits signals from depressor area to heart?

A

(vagus nerve)

38
Q

What effect does Acetylcholine have on blood pressure?

A

(decrease blood pressure, because it sets free Nitric Acid and inhibits cardiac activity)

39
Q

Where are vasomotor centres located in the brain?

A

(close to respiratory center in the reticular formation)

40
Q

Where are volume receptors found?

A

(in the lungs and in the capacitance system of circulation eg. Right atrial wall)

41
Q

Which nerve is efferent for the heart?

A

(n. vagus)

42
Q

Where are chemoreceptors located in the CNS?

A

(bottom of 4th chamber)

43
Q

What nerve has the afferent fibers from baroreceptor in the carotid sinus?

A

(Hering’s nerve)

44
Q

Which part do you have to stimulate of depressor nerve to cause vasodilatation?

A

(caudomedial depressor area)

45
Q

Which part do you have to stimulate of depressor nerve to cause vasoconstriction?

A

(craniolateral pressor area)

46
Q

Where can you find the respiratory center/neorons?

A

(Brain stem, pons close to vasomotor center in reticular formation)

Physiology (20 decks)

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