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Terms in this set (12)
How might stretch marks on the skin, commonly seen when one gains much weight, relate to the dermis?
Collagen and elastic fibers in the dermis provides the skin with strength and elasticity. Extreme stretching results in tears called stretch marks.
Because it is subjected to the most abrasion, the oldest part of the hair cuticle tends to wear away at the tip of the hair shaft. What is the reason and the common name for this phenomenon?
Common name; split end. Reason; thermal, chemical, mechanical stressors. For example, hair products, heat, bodily stress.
A long bone that is taken from a fresh cadaver and soaked in weak acid for several weeks will maintain its original shape but will look leathery and can be easily tied into a knot. Explain this transformation, and what does it indicate concerning the function of support.
The acid decomposes the crystallized mineral salts that are responsible for tensive strength. Bone cells called osteoclasts secrete enzymes and the acid breaks down these mineral salts and collagen fibers.
Distinguish between the three types of vertebrae.
Cervical- bifid spinous process, transverse foramen, 7 total
Thoracic- facets for rib attachment, 12 total
Lumbar- biggest base, strongest, 5 total
Explain the foramen magnum.
This is the hole that the spinal chord travels through to attach to the brain.
Name the cranial bones that the sphenoid articulates with
Frontal, parietal, ethmoid, temporal, occipital.
What damage would a splintered inwardly fractured clavicle cause?
blood vessels, nerve, and lung damage
Discuss the importance of the arched arrangement of the foot bones.
creates space for soft tissue that is elastic and acts like a spring. The arch allows more support for the weight of the body
Convince the person that this is a female pelvis
Women have more open and circular inlets, broader seratic notch, wider angle where the pelvic bones meet, more outwardly hip bones, obturator foramen is oval shaped.
Explain how cleats are responsible for most knee injuries
the modern cleat produces high surface friction which enhances foot fixation that causes more knee ligament injuries.
Correct explanation of "double-jointed".
hyper mobility which causes joints to stretch further than normal also because of misaligned joints or abnormally shaped ends of bones at a joint.
Why is it common for a person to experience repeated dislocations at a given joint?
With each dislocation, the ligaments keeping the bone fixed in the correct position can be damaged or loosened making it easier for the joint to be dislocated again.
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