Lab 3 and 4:
This presentation is the property of its rightful owner.
Sponsored Links
1 / 16

Lab 3 and 4: Integumentary and Muscular Systems PowerPoint PPT Presentation


  • 78 Views
  • Uploaded on
  • Presentation posted in: General

Lab 3 and 4: Integumentary and Muscular Systems. Skeletal Muscle. origin - what muscle attaches to for leverage, usually larger and more stationary bone than insertion

Download Presentation

Lab 3 and 4: Integumentary and Muscular Systems

An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript


Lab 3 and 4 integumentary and muscular systems

Lab 3 and 4: Integumentary and Muscular Systems


Lab 3 and 4 integumentary and muscular systems

Skeletal Muscle

origin - what muscle attaches to for leverage, usually larger and more stationary bone than insertion

insertion - what muscle attaches to for movement, usually a smaller bone than the origin and not stationary; the insertion is what the muscle acts upon and causes to move

action - this is the type of movement that occurs


Lab 3 and 4 integumentary and muscular systems

Triceps Brachii – origin = proximal humerus, insertion = proximal ulna, action = elbow extention

Biceps Brachii – origin = lateral scapula, insertion= proximal radius, action = flexes forarm


Lab 3 and 4 integumentary and muscular systems

Helpful hints for identification of skeletal muscles:

Relative to direction of muscle fibers:

rectus -fibers running parallel to the midline of the body or

longitudinal axis of a bone

transverse - fibers running at right angles or perpendicular to the midline or longitudinal axis of a bone

oblique - fibers running obliquely (slanted or at a diagonal) to the midline of the body or longitudinal axis of a bone


Lab 3 and 4 integumentary and muscular systems

Relative to size:

maximus – largest

minimus – smallest

longus – long

brevis - short


Lab 3 and 4 integumentary and muscular systems

Relative to the number of origins:

Biceps – 2

Triceps – 3

Quadriceps – 4


Lab 3 and 4 integumentary and muscular systems

Relative to location of origin and insertion example:

sternohyoid- sterno refers to the origin, which is themanubriumof the sternum and hyoid refers to theinsertion, which is the hyoid bone.


Lab 3 and 4 integumentary and muscular systems

Relative to location of muscle example:

brachioradialis - brachio refers to arm and radialis refers to the radius. This muscle runs along the radius of the forearm


Lab 3 and 4 integumentary and muscular systems

Relative to shape of the muscle example:

deltoid - the muscle is triangular like the name implies

Rhomboid


Lab 3 and 4 integumentary and muscular systems

Muscle Movements

Movements that occur in the saggital plane:

flexion/extension - waist (bend/extend)

plantarflexion/dorsiflexion - ankle (point/ bend)

Movements that occur in the frontal plane:

abduction/adduction - arm/hip (movement away from midline/movement toward midline)

inversion/eversion - foot (turn or roll foot in/turn or roll foot out)

Movements that occur in the transverse plane:

rotation - neck


Lab 3 and 4 integumentary and muscular systems

pronation/supination - wrist (turn hand palm down/palm up

antagonist muscle groups - one muscle works against the other (ex: biceps brachii and

triceps brachii - when one muscle flexes the other extends)

elevation/depression - upward movement/downward movement (shrugging your shoulders)

protraction/retraction - moving a part of the body away from the axis /opposite

action (you protract your jaw when you grasp your upper lip with your lower teeth)

tensor - makes more rigid

sphincter - closes hole


Lab 3 and 4 integumentary and muscular systems

  • Abdominal Wall Muscles:

  • External obliques

  • Internal obliques

  • Transverse Abdominus

  • Rectus Abdominus "6-pack")


Lab 3 and 4 integumentary and muscular systems

Rotator Cuff Muscles ("SITS")

** ALL rotator cuff muscles: origin=scapula, insertion=humerus

  • Supraspinatus

  • Infraspinatus

  • TeresMinor

  • Subscapularis


Lab 3 and 4 integumentary and muscular systems

Quadriceps Femoris ("Quads")

** ALL quad muscles: insertion=tibialtuberosity via patellar ligament, action=knee extension

  • VastusLateralis

  • VastusMedialis

  • VastusIntermedius

  • Rectus Femoris


Lab 3 and 4 integumentary and muscular systems

  • Hamstrings

  • ** ALL hamstring muscles: origin=ischium (the ischialtuberosities you "sit on"), action=knee flexion

  • Biceps femoris

  • Semimembranosus

  • Semitendinosous


  • Login