Question

which of the following is true of the subcutaneous layer?
contains large amounts of collagen fibers.
substantial blood supply for injections.
it is avascular.
it provides a rigid platform for deeper structures.
is attached to the epidermis by a basement membrane.

Explanation:

The subcutaneous layer, also known as the hypodermis, contains large amounts of collagen fibers and adipose tissue. It has a good blood - supply which makes it suitable for injections. It is not avascular. It is a soft layer, not a rigid platform. The epidermis is attached to the dermis by a basement membrane, not the subcutaneous layer.

Answer:

Substantial blood supply for injections.