Certified Instrument Specialist (CIS) Practice Exam 2025 – The All-in-One Guide to Achieving Certification Success!

Question: 1 / 400

What is the outer layer of a bone or organ called?

Medulla

Cortex

The outer layer of a bone or organ is referred to as the cortex. In bone, specifically, the cortex is a dense outer surface that provides strength and houses structures such as blood vessels and nerves. This compact layer plays a crucial role in protecting the inner, more delicate structures like the medulla, which is composed of spongy bone or marrow. The cortex contributes significantly to the overall integrity and function of the bone.

In organs, the cortex can refer to the outer region of organs such as the kidney or adrenal glands. Its structure is important for the function of those organs and serves as a protective barrier for the innermost areas. Understanding that the cortex is the outer layer helps to clarify its role in both bone and organ anatomy, emphasizing its protective and supportive functions.

Get further explanation with Examzify DeepDiveBeta

Epiphysis

Periosteum

Next Question

Report this question

Download Certified Instrument Specialist (CIS) Practice Exam PDF Study Guide
Subscribe

Get the latest from Examzify

You can unsubscribe at any time. Read our privacy policy