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Anatomy Cindy Vigil

Week 1-5

QuestionAnswer
What are the 3 components of the skeletal system? Rigid bones, 2) Cartilage 3) Ligaments
How do muscles create movement at joints? Muscles attach to bones with tendons. When muscles contract and shorten, they pull on bones, creating movement at joints
What is a molecule? 2 or more atoms bonded together
What is an examples of molecules formed by different atoms vs. identical atoms. Different: H₂O. Identical: O₂​​​​​​​​​​​​​​​​
Who first observed cells and when? Robert Hooke in 1665 using a primitive microscope
What did Robert Hooke observe and publish? He published Micrographia, showing drawings of cells in cork, plus lice and fleas​​​​​​​​​​​​​​​​
What does the integumentary system include and what does it do? Skin, hair, nails, glands. Protects body, regulates temperature, sensory perception
What are the 2 main layers of skin? Epidermis (outer, sheds cells). Dermis (glands, vessels, receptors, hair follicles).​​​​​​​​​​​​​​​​
What do osteoblasts and osteoclasts do with calcium? Osteoblasts store calcium in bone. Osteoclasts break down bone and release calcium into bloodstream.
What 2 hormones regulate calcium levels? Parathyroid hormone (from parathyroid gland) and calcitonin (from thyroid gland).​​​​​​​​​​​​​​​​
What angle for intramuscular injection and why is it faster than subcutaneous? Back: 90° angle (perpendicular). Faster because muscle has rich blood supply.
What is the Z-track method? Pull skin laterally, inject, then release. Creates zigzag path that seals needle track.
Created by: user-1991304
 

 



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