Short Quiz On Bones Practice

Explanation
Compact bone makes up the hard outer part of bones. It is dense and provides strength and support to the skeleton. Compact bone is composed of tightly packed osteons, which are circular units that contain concentric rings of bone tissue called lamellae. These lamellae are made up of collagen fibers and mineralized matrix, giving compact bone its hardness. Compact bone also contains small channels called canaliculi, which allow for the exchange of nutrients and waste between osteocytes, the bone cells.

Explanation
Marrow is the correct answer because it is responsible for producing red blood cells. Marrow is a soft tissue found inside the bones, and it contains stem cells that can differentiate into various types of blood cells, including red blood cells. Red blood cells are essential for carrying oxygen throughout the body, so the marrow plays a crucial role in maintaining a healthy blood supply. Compact bone and spongy bone, on the other hand, are types of bone tissue that provide support and protection but do not directly produce red blood cells.

Explanation
The axial skeleton is the central part of the skeleton that includes the skull (cranium) and the vertebral column (vertebrae). It provides support and protection for the brain, spinal cord, and organs in the thoracic and abdominal cavities. The humerus is a bone in the upper arm, while the femur is a bone in the thigh, and they are not part of the axial skeleton. Therefore, the correct answer is Cranium & vertebrae.

Explanation
Spongy bone has a net-like appearance due to its structure. It consists of a network of trabeculae, which are thin, branching structures that create a lattice-like pattern. This type of bone tissue is found at the ends of long bones and in the interior of flat bones. Its porous nature allows for the storage of bone marrow and provides strength and support while being lightweight.

Explanation
A joint is the area where two parts of the skeletal system meet. It is a point of connection between bones, allowing movement and flexibility. Joints can be found throughout the body, including the knees, elbows, and shoulders. They are essential for proper functioning of the skeletal system and enable us to perform various movements and activities.

Explanation
The joint type found at the shoulder and hip is the ball and socket joint. This type of joint allows for a wide range of movement in multiple directions, similar to how a ball can rotate freely within a socket. The ball-shaped end of one bone fits into the cup-shaped socket of another bone, allowing for the movement and stability needed in these major joints of the body.

Explanation
The bone in the lower arm that attaches to the wrist side is called the radius. The radius is one of the two long bones in the forearm, along with the ulna. The radius is located on the thumb side of the forearm and runs parallel to the ulna. It is responsible for rotating the forearm and also plays a role in supporting the wrist joint.

Explanation
The correct answer is scapula. The scapula, also known as the shoulder blade, is a large triangular bone located on the upper back. It connects the upper arm bone (humerus) to the collarbone (clavicle) and helps to form the shoulder joint. The scapula plays a crucial role in the movement and stability of the shoulder, allowing for various arm movements.

Explanation
The name of the finger bones is phalanges. These bones are located in the fingers and toes and are responsible for providing structure and support to the digits. They allow for movement and dexterity in the hands and feet. The tibia, fibula, and humerus are bones found in other parts of the body, not specifically in the fingers.

Explanation
The tibia is the larger bone in the lower leg. It is commonly known as the shinbone and is located on the inner side of the leg. The tibia plays a crucial role in supporting body weight and is responsible for connecting the knee joint to the ankle joint. It is also an important bone for muscle attachment, providing stability and strength to the leg. The fibula, on the other hand, is the smaller bone in the lower leg, located on the outer side. The humerus and ulna are bones found in the arm, not the lower leg.