The choice that best fits and answers the question is;
D: absorption
I hope this answer is sufficient and has aided you.
Cheers.
Answer:
d. superior to the popliteal region
Explanation:
The lumbar region comprises five vertebrae of the back where the spine bends outward. This part of the spine is essential as it holds the majority of the body weight and also offers flexibility. The popliteal portion is situated at the backend part of the knee and forms the lumbar region at its superior segment. So, the correct answer is option d.
Answer:
most common samples used today Blood and Hair
The skin is an example of a non-specific defense.
For example, bacteria or diseases have trouble entering a healthy person's skin because it is formed by closely packed cells with multiple layers and a substance called keratin that protects is.
On the other hand, the immune system is a specific defense mechanism.
When bacteria is able to enter the body in cases of fever for example, the immune system is activate and sends out protector cells such as the white blood cells to combat infection.
