Skeletal System Flashcard

Front

Which type of bone are human vertebrae classified as?

Back

Irregular bones are those that do not fit into the other categories of bone shapes. Human vertebrae are classified as irregular bones due to their complex shapes.

Front

What type of bones are the ribs, sternum, and scapula classified as?

Back

Flat bones are thin and often curved. The ribs, sternum, and scapula are classified as flat bones because they provide protection and a surface for muscle attachment.

Front

The sesamoid bone is embedded in ________.

Back

Tendon. Sesamoid bones are small bones that are embedded within a tendon, helping to protect the tendon and increase its mechanical advantage.

Front

Which of the following is not true about bones?

Back

Bones are non-living tissues. This statement is false; bones are living tissues that constantly remodel and respond to stress.

Front

The purpose of the ribs is...

Back

To protect the heart and lungs. The ribs form a protective cage around vital organs in the thoracic cavity.

Front

What are the main functions of the skeletal system?

Back

The skeletal system provides support, protects internal organs, allows movement, stores minerals, and produces blood cells.

Front

What are the two main types of bone tissue?

Back

Cortical (compact) bone and trabecular (spongy) bone. Cortical bone is dense and forms the outer layer, while trabecular bone is lighter and found inside bones.

Front

What is the role of cartilage in the skeletal system?

Back

Cartilage provides cushioning at joints, reduces friction, and supports the structure of certain body parts like the nose and ears.

Front

How many bones are in the adult human body?

Back

There are 206 bones in the adult human body. This number can vary slightly due to individual differences.

Front

What is the difference between axial and appendicular skeleton?

Back

The axial skeleton includes the skull, vertebral column, and rib cage, while the appendicular skeleton includes the limbs and pelvic girdle.