The Importance of CPR and First Aid Certification. Being trained in CPR and first aid can be invaluable when someone is in serious medical distress. These techniques can help save someone who has suffered a heart attack, a near-drowning accident or any number of other emergency situations.
The solidification of blood at the site of an injured blood vessel is called clotting.
C. They must be obtained through diet.
Explanation - Essential nutrients are those nutrients that are not produced by the body and instead needs to be taken in by having food. Example - carbohydrates, proteins, fats, vitamins and minerals. We can get most of the nutrients if we consume balanced diet.
Non-essential nutrients are produced by the body and need to rely completely on food or any other dietary substances.
Example - cholesterol. Thus in this case, we can say that essential nutrients are consumed via diet.
Spinal meninges are protective layers that cover the central nervous system, spinal roots and the spinal cord. Since these part of the body is the most complex because they control locomotor movements and affect our way of thinking, this must be protected.
The three types of spinal meninges are: dura mater, arachnoid meter and the pia mater. The outermost or the most superficial layer is the dura meter. It is composed of high collagen and fiber. Next to this is the arachnoid followed by the pia mater which is the layer closest to the spinal cord.