Answer:
The correct answer is D. The surface of the skin can be mapped into distinct regions, each served by a single spinal nerve: these regions are called dermatomes.
Explanation:
A dermatome is the area of skin innervated by a single spinal nerve and its spinal ganglion. The cutaneous nerves are those that reach the skin, picking up the sensitivity of the skin. Each cutaneous nerve is distributed in a certain area of skin, called a dermatome.
A pair of posterior or sensory roots and a pair of anterior or motor roots arise from each cord segment, joining laterally at the level of the intervertebral foramen to form a mixed spinal nerve. Each of these innervates a strip of skin called a dermatome, so the body surface can be considered a true mosaic of these.
In the extremities the arrangement of dermatomes is more complicated because of the embryological rotation of the limbs as they grow from the trunk.
Answer:
True
Explanation:
Newton’s First law of Motion states that an object in motion will stay in motion and an object at rest will stay at rest unless acted upon by an unbalanced force.
Without a centrosome, cells would not be able to move organelles around the cytoplasm. The centrosome is part of the nucleus that <span>interacts with the chromosomes to build the mitotic spindle. It is typical for the animal cells. This organelle is also responsible for cell division and the stages in the cell division process.</span>
