Integument Accessory Structures
The pale crescent-shaped area at the base of the nail body is called this.
What is the lunula?
These bones are small and boxy, found in the wrists and ankles.
What are short bones?
This term refers to the elongated shaft of a long bone.
What is the diaphysis?
The cervical region of the spine contains this many vertebrae.
What is 7?
The hip bone is formed by the fusion of these three bones.
What are the ilium, ischium, and pubis?
These smooth muscles pull on hair follicles to make hairs stand up, causing "goosebumps."
What are arrector pili muscles?
These bones are thin with roughly parallel surfaces, providing protection for soft tissues and large areas for muscle attachment. Examples include the cranial bones, sternum, ribs, and scapulae.
What are flat bones?
The expanded ends of long bones that form joints are called this.
What are epiphyses?
These two curves of the spine develop after birth to balance the head and trunk during sitting and standing.
What are the cervical and lumbar curves?
The first cervical vertebra that supports the skull is known by this name.
What is the atlas (C1)?
This part of the hair follicle contains actively dividing cells responsible for hair growth.
What is the hair matrix?
These bones develop inside tendons near joints and can vary in number among individuals.
What are sesamoid bones?
This dense outer layer of bone provides strength along its length.
What is compact bone?
This U-shaped bone does not articulate with any other bone and supports the larynx.
What is the hyoid bone?
Ribs 1–7 are directly attached to the sternum by costal cartilages and are called this.
What are vertebrosternal ribs (true ribs)?
This condition, caused by inadequate calcitriol production in children, leads to flexible, poorly mineralized bones.
What is rickets?
These bones form between cranial sutures and are highly variable in number.
What are sutural (wormian) bones?
These tiny canals connect lacunae and allow osteocytes to exchange nutrients.
What are canaliculi?
These vertebrae have long, slender spinous processes and costal facets for rib articulation.
What are the thoracic vertebrae?
The rounded lateral condyle of the humerus that articulates with the radius.
What is the capitulum?
This type of sweat gland is found in the axillae and pubic regions, producing odorous secretions influenced by hormones.
What are apocrine sweat glands?
These bones have complex shapes with short, flat, notched, or ridged surfaces, and examples include the vertebrae, pelvis, and certain facial bones.
What are irregular bones?
Bone tissue is composed of about one-third of this organic material that gives flexibility.
What is collagen?
These joints connect adjacent vertebrae and are formed by the superior and inferior articular processes.
What are articular facets?
The deep socket on the hip bone that articulates with the head of the femur.
What is the acetabulum?