NURS 301 Lecture Notes - Lecture 3: Intramuscular Injection, Pectoralis Major Muscle, Toe
What is the importance of learning about muscular system in
biomedical disciplines?
Physical therapy
-
Prescribe relevant exercises
-
Muscle functions and locations
-
Intramuscular injection
-
Common words to name muscles
Abdominis (abdomen)
-
Brachii (arm)
-
Capitis (head)
-
Carpi (wrist)
-
Cervicis (neck)
-
Digiti (finger, toe, sinugular)
-
Digitorum (finger, toe, plural)
-
Femoris (femur, or thigh)
-
Fibularis (fibula)
-
Hallucis (great toe)
-
Indicis (index finger)
-
Intercostal (between the ribs)
-
Lumborum (of the lower back)
-
Pectoralis (of the chest)
-
Pollicis (of the thumb)
-
Profundus (deep)
-
Superficialis (superficial)
-
Thoracis (of the thorax)
-
Size
Brevis (short)
-
Longus (long)
-
Major (large)
-
Maximus (largest)
-
Minimus (smallest)
-
Minor (small)
-
Mandibular Movement
Depression: opening the mouth
-
Elevation: closing the mouth
-
Protraction: horizontal movement of the mandible anteriorly
-
Retraction: Horizontal movement of the mandible posteriorly
-
Rotation: the anterior tip of the mandible is slewed from side
to side
-
Facial Muscles
Temporalis: fan shaped on skull
Origin: temporal bone
-
Insertion: mandible
-
Action: Elevates retracts, lateral and medial excursion
-
Masseter
Origin: Mandible
-
Insertion: Zygomatic
-
Action: elevation of mandible
-
Pterygoids (Medial and lateral)
Origin: Mandible
-
Insertion: Sphenoid
-
Action: elevates/protracts, lateral and medial excursion,
depression of the mandible
-
Chewing Muscles
3 above muscles all involved in chewing
-
Masseter and temporalis are superficial level
-
Pterygoids deeper
-
Scapular Movement
Elevation
-
Adduction (retraction)
-
Abduction (protraction)
-
Depression
-
Upward rotation/downward rotation
Upward is towards lateral side of body
○
Downward is towards medial side of body
○
-
Trapezius
Origin: occipital bone/cervical and thoracic vertebrae
-
Insertion: scapula and clavicle
-
Action: elevation and adduction of scapula
E.g. shoulder shrugging
○
-
Levator Scapula
Origin: upper border of scapula
-
Insertion: cervical vertebrae
-
Action: stabilize and elevate scapula
-
Rhomboids (one later deep from Levator)
Origin: cervical/thoracic vertebrae
-
Insertion: medial border of scapula
-
Action: adduction of scapula
-
Shoulder Movement
Flexion
-
Extension
-
Abduction
-
Adduction
-
Internal (medial) rotation
-
External (lateral) rotation
-
Pectoralis Major
Origin: Clavicle, sternum, and ribs
-
Insertion: Humerus
-
Action: flexion, adduction, and medial rotation of humerus
-
Latissimus Dorsi
Biggest muscle on back of body
-
Origin: thoracic vertebrae, pelvis
-
Insertion: humerus
-
Action: adduction, extends and medial rotation humerus
-
Deltoid
Origin: clavicle and scapula
-
Insertion: humerus
-
Action: abduction/flexion/extension, medial rotation of
humerus
-
Subscapularis
Origin: scapula (anterior side)
-
Insertion: humerus
-
Action: medially rotate humerus
-
Supraspinatus
Origin: post border of scapula
-
Insertion: humerus
-
Action: abduction of humerus
-
Infraspinatus
Origin: scapula
-
Insertion: humerus
-
Action: laterally rotates humerus
-
Teres minor
Origin: scapula
-
Insertion: humerus
-
Action: adducts and lateral rotation humerus
-
Rotator Cuff
4 muscles dynamic stability of shoulder
-
Act together and provide stability for activities like throwing a
ball or any kind of movement overhead activity
Subscapularis
○
Supraspinatus
○
Infraspinatus
○
Teres minor
○
-
Elbow Movement
Extension
-
Flexion
-
Pronation
-
Supination
-
Biceps brachii
Origin: scapula
-
Insertion: radius
-
Action: humerus and elbow flexion
-
Anterior side of arm
-
2 heads, short and long
-
Brachialis
Origin: humerus
-
Insertion: ulna
-
Action: elbow flexion (primer mover)
-
Triceps brachii
Origin: scapula
-
Insertion: ulna
-
Action: extend humerus and elbow
-
Posterior side of arm
-
3 heads, long, lateral, and medium
-
Hip Movement
Flexion "kicking up"
-
Extension "kicking back"
-
Adduction "away from midline"
-
Abduction "bringing towards midline"
-
Medial rotation "internal rotation"
-
Lateral rotation "external rotation"
-
Iliopsoas
Origin: lumbar vertebrae
-
Insertion: femur
-
Action: flexion of femur and trunk
-
Tensor Fascia Lata
Origin: ilium
-
Insertion: tibia via iliotibial band
-
Action: extend knee, abduct and medial rotate femur
-
Gluteal muscles
Origin: ilium
-
Insertion: femur
-
Action: extend and abduct femur
-
Adductors (group)
Origin: ilium
-
Insertion: femur
-
Action: adduction of femur
-
Anterior and medial side
-
Knee Joint Movement
Flexion
-
Extension
-
Quadriceps Femoris
Origin: ilium and femur
-
Insertion: tibia
-
Action: extension of knee
-
Hamstring
Origin: ischium
-
Insertion: tibia and fibula
-
Action: Flexion of knee joint
-
Ankle Joint Movement
Flexion
-
Extension
-
Pronation, sole faces in
-
Supination: sole faces out
-
Gastrocnemius
Origin: femur
-
Insertion: heel vis Achilles tendon
-
Calf muscles: gastrocnemius and soleus
-
Action: plantar flexion of ankle, flexion of knee
-
Tibialis Anterior
Origin: tibia
-
Insertion: metatarsal bone
-
Action: Dorsi flexion of ankle
-
Online Lecture - Week 3
Friday, April 13, 2018
2:15 PM
What is the importance of learning about muscular system in
biomedical disciplines?
Physical therapy
-
Prescribe relevant exercises
-
Muscle functions and locations
-
Intramuscular injection
-
Common words to name muscles
Abdominis (abdomen)
-
Brachii (arm)
-
Capitis (head)
-
Carpi (wrist)
-
Cervicis (neck)
-
Digiti (finger, toe, sinugular)
-
Digitorum (finger, toe, plural)
-
Femoris (femur, or thigh)
-
Fibularis (fibula)
-
Hallucis (great toe)
-
Indicis (index finger)
-
Intercostal (between the ribs)
-
Lumborum (of the lower back)
-
Pectoralis (of the chest)
-
Pollicis (of the thumb)
-
Profundus (deep)
-
Superficialis (superficial)
-
Thoracis (of the thorax)
-
Size
Brevis (short)
-
Longus (long)
-
Major (large)
-
Maximus (largest)
-
Minimus (smallest)
-
Minor (small)
-
Mandibular Movement
Depression: opening the mouth
-
Elevation: closing the mouth
-
Protraction: horizontal movement of the mandible anteriorly
-
Retraction: Horizontal movement of the mandible posteriorly
-
Rotation: the anterior tip of the mandible is slewed from side
to side
-
Facial Muscles
Temporalis: fan shaped on skull
Origin: temporal bone
-
Insertion: mandible
-
Action: Elevates retracts, lateral and medial excursion
-
Masseter
Origin: Mandible
-
Insertion: Zygomatic
-
Action: elevation of mandible
-
Pterygoids (Medial and lateral)
Origin: Mandible
-
Insertion: Sphenoid
-
Action: elevates/protracts, lateral and medial excursion,
depression of the mandible
-
Chewing Muscles
3 above muscles all involved in chewing
-
Masseter and temporalis are superficial level
-
Pterygoids deeper
-
Scapular Movement
Elevation
-
Adduction (retraction)
-
Abduction (protraction)
-
Depression
-
Upward rotation/downward rotation
Upward is towards lateral side of body
○
Downward is towards medial side of body
○
-
Trapezius
Origin: occipital bone/cervical and thoracic vertebrae
-
Insertion: scapula and clavicle
-
Action: elevation and adduction of scapula
E.g. shoulder shrugging
○
-
Levator Scapula
Origin: upper border of scapula
-
Insertion: cervical vertebrae
-
Action: stabilize and elevate scapula
-
Rhomboids (one later deep from Levator)
Origin: cervical/thoracic vertebrae
-
Insertion: medial border of scapula
-
Action: adduction of scapula
-
Shoulder Movement
Flexion
-
Extension
-
Abduction
-
Adduction
-
Internal (medial) rotation
-
External (lateral) rotation
-
Pectoralis Major
Origin: Clavicle, sternum, and ribs
-
Insertion: Humerus
-
Action: flexion, adduction, and medial rotation of humerus
-
Latissimus Dorsi
Biggest muscle on back of body
-
Origin: thoracic vertebrae, pelvis
-
Insertion: humerus
-
Action: adduction, extends and medial rotation humerus
-
Deltoid
Origin: clavicle and scapula
-
Insertion: humerus
-
Action: abduction/flexion/extension, medial rotation of
humerus
-
Subscapularis
Origin: scapula (anterior side)
-
Insertion: humerus
-
Action: medially rotate humerus
-
Supraspinatus
Origin: post border of scapula
-
Insertion: humerus
-
Action: abduction of humerus
-
Infraspinatus
Origin: scapula
-
Insertion: humerus
-
Action: laterally rotates humerus
-
Teres minor
Origin: scapula
-
Insertion: humerus
-
Action: adducts and lateral rotation humerus
-
Rotator Cuff
4 muscles dynamic stability of shoulder
-
Act together and provide stability for activities like throwing a
ball or any kind of movement overhead activity
Subscapularis
○
Supraspinatus
○
Infraspinatus
○
Teres minor
○
-
Elbow Movement
Extension
-
Flexion
-
Pronation
-
Supination
-
Biceps brachii
Origin: scapula
-
Insertion: radius
-
Action: humerus and elbow flexion
-
Anterior side of arm
-
2 heads, short and long
-
Brachialis
Origin: humerus
-
Insertion: ulna
-
Action: elbow flexion (primer mover)
-
Triceps brachii
Origin: scapula
-
Insertion: ulna
-
Action: extend humerus and elbow
-
Posterior side of arm
-
3 heads, long, lateral, and medium
-
Hip Movement
Flexion "kicking up"
-
Extension "kicking back"
-
Adduction "away from midline"
-
Abduction "bringing towards midline"
-
Medial rotation "internal rotation"
-
Lateral rotation "external rotation"
-
Iliopsoas
Origin: lumbar vertebrae
-
Insertion: femur
-
Action: flexion of femur and trunk
-
Tensor Fascia Lata
Origin: ilium
-
Insertion: tibia via iliotibial band
-
Action: extend knee, abduct and medial rotate femur
-
Gluteal muscles
Origin: ilium
-
Insertion: femur
-
Action: extend and abduct femur
-
Adductors (group)
Origin: ilium
-
Insertion: femur
-
Action: adduction of femur
-
Anterior and medial side
-
Knee Joint Movement
Flexion
-
Extension
-
Quadriceps Femoris
Origin: ilium and femur
-
Insertion: tibia
-
Action: extension of knee
-
Hamstring
Origin: ischium
-
Insertion: tibia and fibula
-
Action: Flexion of knee joint
-
Ankle Joint Movement
Flexion
-
Extension
-
Pronation, sole faces in
-
Supination: sole faces out
-
Gastrocnemius
Origin: femur
-
Insertion: heel vis Achilles tendon
-
Calf muscles: gastrocnemius and soleus
-
Action: plantar flexion of ankle, flexion of knee
-
Tibialis Anterior
Origin: tibia
-
Insertion: metatarsal bone
-
Action: Dorsi flexion of ankle
-
Online Lecture - Week 3
Friday, April 13, 2018 2:15 PM
