Lab 4 Flashcards
1
Q
Horse heart rate
A
30-40/min
2
Q
Cattle heart rate
A
60-80/min
3
Q
Small ruminants heart rate
A
60-80/min
4
Q
Swine heart rate
A
60-80/min
5
Q
Dogs large size heart rate
A
70-100/min
6
Q
Dog new-born heart rate
A
150-200/min
7
Q
Cat adult heart rate
A
120-160/min
8
Q
Cat new born heart rate
A
200-250/min
9
Q
Rabbit heart rate
A
150-200/min
10
Q
Poultry heart rate
A
140-400/min
11
Q
Acetylcholine
A
Parasympathetic transmitter
Liberated from synapses of n. Vagus
Type 2 muscarinic receptors
12
Q
Antropine
A
Competitor of acetylcholine
Binds muscarinic acetylcholine receptors without stimulating them
13
Q
Epinephrine
A
Sympathetic hormone
Lowers threshold of pacemaker cells
14
Q
Propanolol
A
Beta receptor blocker
Returns heart function to normal
15
Q
Verapamil
A
Calcium channel blocker
- L type ca channel
- leads to irregular heart beats
- power of the heart decreases
16
Q
Strophantine
A
Na+/ka+ ATPase blocker
- increase intracellular na+ and decrease intracellular K+
- more na means more ca which incr heart power
- incr mucsle relaxation
- incr atrial contraction
- decr ventricular contraction
- > arrhythmia
- heart failure therapy by acetylcholine
