Answer: Refractory period of the cardiac action potential
Explanation:
Unlike the skeletal muscle which can be reactivated before it reaches a contraction, cardiac muscle must wait before it is almost completely relaxed to be activated again (because of its long refractory period), so one cannot make an increase in strength of contraction with a high frequency of stimulations.
It irritates your lungs and throat and it ca cause inflammation
Answer:
The difference between the effects of a spinal injury at C3 and one at T3 is due to the fact that the segment of the spinal cord affected, and the functions it controls, are different.
Explanation:
From the spinal cord originate the spinal nerves, which are responsible for controlling both sensory and motor nerve functions.
Each segment of the spinal cord controls a group of specific motor and sensory nerves, known as myotomes and dermatomes.
Vertebral injuries can cause spinal cord inflammation or permanent spinal cord damage. The involvement of a segment of the spinal cord can be evidenced by
- <u><em>Sensory level</em></u><em>: which is the lowest level of sensory function that remains intact. </em>
- <u><em>Motor level</em></u><em>: the lowest level in which motor activity remains functional. </em>
<u><em>The difference between a C3 and T3 lesion is that the cervical lesion affects the dermatome and myotome that control this segment, in addition to all those below it. On the other hand, a T3 lesion can affect this dermatome and myotome, in addition to the lower ones, but the functions above the lesion will not be affected</em></u>.
- A vertebral injury in C3 —third thoracic vertebra— is very high —sensory and motor level with response maintained on the neck— and produces a failure of almost all the peripheral nerves, with paralysis from the neck down. This includes breathing and control of the diagphragm (breathing) and the four limbs.
- Injuries in T3 —third thoracic vertebra— the motor and sensory level is lower, allowing movement of arms and breathing, but with paralysis of part of the trunk, lower extremities and control of the bowel and urinary bladder.
<span>A stereoscope uses two pictures from slightly
different viewpoints in order to provide the illusion in 2-d images. The two slightly different pictures of the same object or scene
will be seen by the left eye and the other picture will be seen by the right
eye, and then when they are viewed in stereoscope, the two pictures were fused
perceptually into single image containing depth. </span>
1. Basic food groups
2. Protein
3. Dairy
4. Fruit
5. Grains
6. Oils and empty calories
7. Vitamin C
8. Vitamin D and A
9. Calcium
10. Dried fruits
11. Carbohydrates