Solutions To Exercises Lesson

The skeleton is a combination of bones joined together that serves as a support or framework of the human body. (para 4-1) 2. The four functions of the human skeleton are d. Formation of blood cells. (para 4-2) 3. An individual bone consists of the outer cortex and the inner medulla. (para 4-4a) 4. The two types of bone marrow are red bone marrow and yellow bone marrow. Yellow bone marrow is mostly yellow fat tissue. Red bone marrow is the only site in adults for the formation of red blood...

Development Of An Individual Bone

The human skeleton is preformed in the early fetus, but the early form is not of bony material. There are two types of bones according to their preformed basis membranous bones and cartilage bones. These are in the location and have the general shape of the adult bones they will later become. (1) Membranous bones. The outer skull bones are an example of membranous bones. Osteoblasts invade a membrane to form a center of ossification (formation of bone). Bone-forming activity spreads...

Secondary Sex Organs

Uterine Tubes (Fallopian Tubes, Oviducts). Extending to either side of the uterus are two muscular tubes which open at the outer ends like fringed trumpets. The fringe-like appendages encircle the ovaries. At their medial ends, the uterine tubes open into the uterus. The function of the uterine tubes is to pick up the ovum when released from the ovary and hold it UNTIL one of the following happens (1) It is fertilized. After fertilization, the initial stages of embryo development take place....

The Axial Skeleton

Diagram Skeleton

The axial skeleton is the central framework of the human body. It includes the skull, the vertebral column (spine), and the thoracic cage (chest or rib cage). Figure 4-3A. Anterior view of the human skeleton. Figure 4-3A. Anterior view of the human skeleton. Figure 4-3B. Posterior view of the human skeleton. Figure 4-3B. Posterior view of the human skeleton. a. Vertebral Column (Spine). The vertebral column, or spine, is made up of a vertical series of bony blocks called vertebrae. These...