X-Rays and ECG's Flashcards
1
Q
What is thermoionic emmision
A
Releasing electrons from a surface
2
Q
How do X-rays harm the body’s cells?
A
Through ionisation
3
Q
What is the intensity dependent on?
A
The distance form the source
4
Q
What effects X-ray absorption?
A
The thickness of the material
5
Q
What uses X-rays to produce moving images inside patients bodies?
A
Fluoroscopy
6
Q
What do CAT scans produce?
A
Images of 2D slices through the body
7
Q
Fill in the gap:
Muscles ___ can generate __________________
A
- Cells
2. Potential difference
8
Q
What is the graph called that measures the action potentials of the heart?
A
The electrocardiograph
9
Q
What is the purpose of a pacemaker?
A
To regulate heart beat
10
Q
What is the hearts natural pacemaker called?
A
Sinoatrial node
11
Q
What device is used to measure the % of oxygen in the blood?
A
Pulse oximeters
