Exam 8: A: Skeletal Tissues

The compact bone that is superficial to the diploë in the skull is called the external table.

The inner circumferential lamellae can be found directly under the periosteum.

Both compact and spongy,or cancellous,bone have canaliculi.

Without the canaliculi,the bone cells in compact bone would die of starvation and lack of oxygen.

Parathyroid hormone is released when blood calcium levels are too high.

Short bones are made up of only spongy bone.

The hardness of bone is related to its two major mineral components-calcium and iron.

The bones of the skull and the ribs are examples of flat bones.

Haversian systems are found only in cancellous bone.

The epiphyseal plate is composed of three layers of cells.

Initially,endochondral bone grows from the epiphyses toward the diaphysis.

Part of the bone matrix is made of inorganic substances.

The cartilage rings in the trachea and the tip of the nose are elastic cartilage.

The terms haversian system and osteon are interchangeable.

One function of bone is to provide a place to make blood cells.

One effect of parathyroid hormone is stimulation of vitamin D activity to increase absorption of calcium by the intestines.

The blood-making function of bone is carried out by yellow marrow or myeloid tissue in the medullary cavity.

In young children,vitamin A and protein deficiency can cause a decrease in the thickness of epiphyseal plates in the growing long bones.

The occurrence of osteoporosis seems to be related to age and gender.

Hyaline cartilage is the most common type of cartilage in the body.