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Appendicular dermatomes are derived from the _______
Preaxial dermatomes are more _____ in origin than postaxial dermatomes
The skin is supplied by which 2 sympathetic fibers only? Which one does not supply the skin?
- The skin is supplied by:
- It is NOT supplied by:
- PARASYMPATHETIC GVE
The limbs contain are joint types except____ (2)
- Gomphoses and Sutures
- they are from the Ligamentous Category
What type of joints are the inter-phalangeal joints?
Pure Hinge Joints
The appendicular musculature develops from ____ and thus is innerv. by the____ (1 exception)
- 1. Hypaxial
- 2. Ventral Primary Rami of Spinal Nerves (the only exception is the trapezius-XI)
Each limb is subdivided into dorsal(____) and ventral(____) layers
- Dorsal: Extensors
- Ventral: Flexors
Extensor layer gives rise to___ muscles.
- Lateral Rotator muscles
Flexor layer gives rise to ____ muscles.
- Medial Rotator Muscles
Medial Rotation ivolves a combination of
Flexor and Adductor muscles
Lateral Rotation involves a combination of
Extensor and Abductor muscles
What type of joint is the elbow joint?
Modified Hinge Joint
Pronator muscles are derived from
Supinator Muscles are derived from
All fine movements of the digits (including ABD and EXT)are performed by
Intrinsic Muscles from the Flexor Layer ONLY!
Shoulder, ELbow, and wrist Joints have at least one ___ muscle that crosses into the flexor field, providing __ insurance.
The ___ ___ ___ of at least 5 spinal segments intertwine to form a limb plexus
Ventral Primary Rami
Each plexus is further divided into Anterior (__) and Posterior (__) divisions.
- Anterior: flexor
- Posterior: Extensor
Both flexor and extensor muscular nerves usually cross the major limb joints on their flexor surfaces to AVOID what???
to avoid being stretched during flexion
The __ arteries cross the major limb joints on their flexor surfaces (to avoid being stretched during flexion)
___ circulation provides adquate blood flow around joints if the __ arteries are compressed during flexion
The efficiency of __ circulation diminishes distally
The __ regions recieve blood from a series of perforating arteries from the ___ stem arteries.
Deep Veins accompany the
What are the Uniaxial Hinge Joints?? (6)
- Humero- Ulnar
- Humero- Radial
- MCP 1
- IP 1
- PIP (2-5)
- DIP (2-5)
Pivot Uniaxail Joints (2)
- Proximal and Distal RU
MultiAxial Plane Joint
- CM (2-5)
MultiAxial Saddle Joint (2)
MultiAxial Ball and Socket
What are the Claviculo-Scapular Muscles?? (6)
- Trapezius (Upper, Mid, Lower)
- Levator Scapulae
- Serratus Anterior
- Pectoralis Minor
- Attaches to the bottom of the clavicle
- it is a muscular ligament
- Stabilizer of the clavicle
What are the Actions seen in the Claviculo-Scapular?
- Abduction (Protraction)
- Adduction (Retraction)
- Upward Rotation
- Downward Rotation
Levator Scapula: Action?? Innervated by??
- Does Elevation
- Innervated: C3-4 (Dorsal Scapular)
What are the actions of each part of the Trapz??
- Upper: Elevation
- Mid: Retraction
- Lower: Depression
Rhomboids: Action?? Innervated??
- Action: It may participate in Elevation. it also does Adduction (retraction), Downward Rotation
- Innervated: C4-5 (Dorsal Scapular)
Pec Minor: Action?? Innervated?? **Hint: Action: Double D Innerv: Its in the name...
- Action: Depression and Downward Rotation
- Innervated: Medial Pectoral
What muscles do ELEVATION in the claviculo-Scapula? (2 w/ a maybe)
- Trapz (upper portion)
- levator scapulae
- Maybe Rhomboids
Subclavius: Action?? Innervated??
- Action: Depression
- Innervated: Nerve to Subclavius
Serratus Anterior: Action?? Innervated??
- Action: ABD (protraction)
- Innerv: Long Thoracic Nerve
What is the only muscle in the claviculo-scapula that does Protraction??
What 2 muscles do Adduction in the claviculo-Scapula??
What are the muscles that do Depression in the claviculo-scapulae??
- Trapz (lower)
- Pec Minor
What 2 muscles do Upward Rotation in the claviculo-scapulae?
- Trapz (whole)
- Serratus Anterior
What muscles do Downward Rotation??
- Levator Scapulae
- Pec Minor
Where is the Long thoracic nerve located on the Serratus Anterior? and Why is it there??
- it is located on the superficial surface
- because if it was located deeper into the muscle it would become compressed by the ribs
Damage to the long thoracic nerve causes
Winging of the scapulae
Where is the Spinal Accessory nerve located??
it is located in the Posterior traingle of the neck, it is exposed in that area where it also innervated sternocleidomastoid
What is the function of the clavicle??
To hold shoulders back
Another name for Sternoclavicular is
Pectoralis Major is continous with what muscle??
The teres MAJOR does the same as what muscle?? another name for the teres major is...
- It does the same as the LATS
- a.k.a Latissimus Dorsi Minor
Another name for Serratus Anterior
Respiratory Muscle; lifts the ribs
Another name for Deltoid
What happens in a Radical Masectomy?
They only leave the Clavicular head of the Pec Major which allows the lady to do some ADL's (brush hair)
What are the 3 heads of the Deltoid??
- Acromial Head
- Spinous Head and Clavicular head: these 2 heads have parallel fibers
What makes up the Rotator Cuff muscles? WHere do they attach to?
- Teres Minor
- Subscapularis ( attach to lesser tubercle)
- They attach to Greater Tubercle of humerus
The Rotator Cuffs are mostly__ stabilizers
The supraspinatus is just an ___, it only activates in 15 degrees; gives the initiation. What do pt's do if does not function correctly??
- Supraspinatus is an ABDUCTOR
- Pt's do a hip kick
WHen you tear the jt. capsule you tear ___ and not the teres major.