Muscular System
By: Liz Slaby
Purpose:
Organs
The Three Types of Muscle
Smooth Muscle
Skeletal Muscle
-Voluntary/ Striated
Under conscious control, individual cells appear striatedCardiac Muscle
In the heart, pumps blood into circulatory system
Specific Organs
Sternocleidomastoid
- Flexes and laterally rotates cervical spine
- Extends neck when the neck is already opened partially
Deltoid
- Rounded triangular muscle on top of shoulder
- Contraction of the fibers rotates the arm
- Able to reach out to the side, and laterally rotate
Pectoralis major
- Begins at breastbone and attaches to clavicle
- Main function is to move the arm across the body
Biceps brachil
- Made of two heads, located on the upper arm
- Move the arm at the elbow
- Two heads work together as flexors
External Abdominal Oblique
- Pair of broad, thin muscles on the lateral sides of the abdominal region
- Many uses such as abdominal crunch resulting in sit ups or side bends
Rectus abdominis
- Common nickname: abs
- Runs down the entire abdomen
- Lumpy appearance creating "six pack"
- Flexes the torso and rotates the spine located in the abdominal region
Satorius
- Longest muscle in the human body
- Anterior region of the thigh
- Important flexor of the thigh, reaches both hip and knee joints
- Common action: crossing legs as to put ankle on knee
Rectus Femoris
- One of the four members of the quadriceps which covers the thigh
- Front and side of thigh
- Connects ilium and femur to patella tendon
Patellar Tendon
- Tendon connects muscles to bones
- Connects quadriceps to tibia (Thigh to shinbone)
Tibalis Anterior
- Dorsal flexor of the foot
- Comes down from tibia and attaches to ankle and foot bone
- Creates foot movement
Article Summary
Homeostatic Imbalances
Muscular Dystrophy
Myotonia
Tendonitis
Bibliography
Pictures:
http://www.pathguy.com/histo/056.jpg
http://eugraph.com/histology/skelsmoo/skelimag/skelbri.jpg
http://www.kumc.edu/instruction/medicine/anatomy/histoweb/muscular/small/Musc14s.JPG
http://o.quizlet.com/ea7kISDR7BAK86lybLtRSw.jpg
http://fcps1.files.wordpress.com/2013/05/deltoid1351465142179.jpg
http://www.shapesense.com/images/pectoralis-major.jpg
http://upload.wikimedia.org/wikipedia/commons/e/e8/Gray392.png
http://www.theballetblog.com/wp-content/uploads/2013/08/sartorius.png
http://www.sciencepicturecompany.com/_img/preview/Rectus-Femoris-Muscles_spc-id-1480.jpg
http://upload.wikimedia.org/wikipedia/commons/d/d4/Tibialis.png
http://crossfitzone.ca/wp-content/uploads/2011/01/tendonitis_wrist.jpg