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Unit 2 Chapter 8
Assignment
| Question | Answer |
|---|---|
| How many skull bones are there? | 22 |
| How many rib bones are there? | 24 ribs; 12 on each side of the body |
| How many cervical vertebrae? | 7 |
| There are four bones in the pectoral girdles. T or F | F only 2; clavicle and scapula |
| How many phalanges? | 56 in whole body |
| the changes that take place in bones as a person ages.: | Adults have fewer bones because bones fuse At birth, there are about 270 bones, and even more bones form during childhood. Adult pelvis has 2 hip bones The fusion of several bones, completed by late adolescence to the mid-20s, brings it to 206 bones |
| The auditory ossicles are named the malleus, incus, and stapes. T or F | T |
| Forensic pathologists look for a fractured hyoid as evidence of strangulation. T or F | T |
| The hyoid is one of the few bones that does not articulate with any other. T or F | T |
| There are three auditory ossicles in each middle-ear cavity and the hyoid bone beneath the chin. T or F | T |
| The hyoid bone serves for attachment of several muscles that control the maxilla, tongue, and larynx. T or F | T |
| the skull from infancy through childhood.: | Most fontanels ossify by the time an infant is 1 year old. The anterior fontanel can still be palpated 18 to 24 months after birth. The frontal bone and mandible are separate right and left bones at birth. |
| The frontal bones usually fuse by age 3 or 4. T or F | False they usually fuse around the age of 5 or 6 |
| The skull grows more rapidly than the rest of the skeleton during childhood. T or F | F |
| List the sutures surrounding the parietal bones. | Sagittal Squamous Coronal Lambdoid |
| The auditory ossicles include which of the following? Malleus Incus Stapes Hyoid Mastoid | Malleus Incus Stapes |
| Which of the following sutures connects the greatest number of bones? Sagittal suture Squamous suture Lambdoid suture Coronal suture | Squamous suture |
| Which is false: skull reaches about half its adult size by 9 months of age. The skull reaches about three-quarters of its adult size by age 1. The skull reaches nearly final size by 8 or 9 years. The frontal bones usually fuse by age 5 or 6. | The skull reaches about three-quarters of its adult size by age 1. |
| Most fontanels ossify by the time the infant is a year old. True or false | true |
| The vertebral column consists of a chain of usually 30 vertebrae with intervertebral discs of fibrocartilage between most of them. T or F | False |
| The vertebral column physically supports the skull and trunk. T or F | t |
| The vertebral column allows for the movement of the skull and trunk. T or F | t |
| The vertebral column protects the spinal cord. T or F | T |
| The vertebral column absorbs stresses produced by walking, running, and lifting. T or F | T |
| Which of the following is the most lateral bone in the forearm? Radius Ulna Tibia Fibula | Radius |
| Which part of the ischium supports the body when sitting? Ischial tuberosity Acetabulum Greater sciatic notch | Ischial tuberosity |
| Which bone is the weight-bearing bone of the lower leg (crural region)? Tibia Fibula Femur Patella | Tibia |
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