Unit 2 Skeletal System Assignment.pdf - Unit 2 Skeletal...

This preview shows page 1 - 2 out of 3 pages.

Unit 2: Skeletal System Assignment 1. Classify bones according to their shapes. Provide examples of each bone shape and a location where found in the body. Long bones- cylinder shape, longer than it is wide. Found in the arms (humerus, ulna, radius), legs (femur, tibia, fibula), fingers (metacarpals, phalanges), and toes (metatarsals, phalanges). Leverage Short bones- cube like shape, approximately equal in length, width, and thickness. Found in the carpals of the wrist and the tarsals of the ankles. Provide stability and support while allowing some motion. Flat bones- misleading because although a flat bone is typically thin, it is also curved. Examples are cranial (skull) bones, the scapulae (shoulder blades), the sternum (breastbone), and the ribs. Flat bones serve as points of attachment for muscles and often protect internal organs. Irregular bones- do not have any easily characterized shape and don’t fit any other classifications. More complex shape like the vertebrae and many facial bones. Protects internal organs. Sesamoid bones- small, round bone, that is shaped like a sesame seed (sesamoid) Forms in tendons in the feet, hands, and knees. Patellae. Protects tendons compressive forces. 2. Identify the major types of bone markings and provide a function for each type. Articulations- two bone surfaces come together (articulus = joint) knee joint Projections- an area of bone that projects above the surface of the bone (attachment point for tendons and ligaments) spinous process of the vertebrae Holes- opening or groove in the bone that allows blood vessels and nerves to enter the bone. sinus 3. Identify the anatomical parts of a typical long bone, and describe its internal

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture