Jason is a 14-year-old who recently had his nose pierced through the nasal septum. He tells his ...

1) Infection of nasal piercings can spread to the brain and cause serious complications. Infections in the brain may occur because of the direct extension from ear, tooth, mastoid, or sinus infections.

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2) By examining the shape of the pelvic inlet, the depth of the iliac fossa, the characteristics of the ilium, and the angle inferior to the pubic symphysis, one could determine the sex. Also significant for determining the sex of the skeleton are the position of the acetabulum, the shape of the obturator foramen, and the general design of the ischium. To determine the age of the individual, bone density, the status of growth plates, and markings are important. The markings where muscles were attached will reveal information about the mass and the general shape of the person.

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3) These processes (superior and inferior) allow the vertebral column to flex forward some, but lock the vertebrae if the column is flexed back and limit rotation to avoid injury to the spinal cord and its nerve roots. In a four-legged animal, such as a horse, these processes allow the back to remain in place while you ride it.

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4) The hyoid acts as an attachment point for muscles in the neck region to connect the muscles in the lower jaw region. It allows for the muscles to make a right angle at the junction of the lower jaw and throat. The hyoid serves as a movable base for the tongue and its horns are attachment points for neck muscles that raise and lower the larynx during speech and swallowing.

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5) 1. Coronal - parietal and frontal
2. Sagittal - between the parietal bones
3. Squamous - parietal and temporal
4. Lambdoidal - parietal and occipital

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6) There are three arches: the medial and lateral longitudinal arches, and the transverse arch. Together they form a half-cone that distributes the weight of the body. They are maintained by the shape of the foot bones, strong ligaments, and by the pull of some tendons.

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7) The atlas or C1 vertebra has no body. It articulates with the skull with large curved articular surfaces to allow the skull to rock in a yes motion. The axis or C2 vertebra has a projection called the dens that allows the axis to pivot, giving the head the no motion. The vertebral foramen of the atlas is enlarged so that when the head is pivoted in the no motion, the spinal cord can move.

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8) The pectoral girdle moves freely across the thorax and allows the upper limb a high degree of mobility, while the pelvic girdle is secured to the axial skeleton to provide strength and support. This is why the glenoid cavity of the scapula is relatively shallow and the acetabulum of the pelvis is a deep socket.

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9) The lower limbs carry the weight of the body and are subjected to exceptional forces. These bones are thicker and stronger. The upper limb bones are adapted for flexibility and mobility and are therefore smaller and lighter.

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10) Intervertebral discs are composed of an inner semifluid nucleus pulposus, which gives the discs elasticity and compressibility, and a covering of fibrocartilage, the annulus fibrosus, which limits expansion and holds successive vertebrae together.

Thank you Jesus, my teacher is bad at explaining

Praise the LORD ha ha No worries