Boot Camp Wednesday Flashcards
What are the parts of the typical muscle?
Belly: meaty fibrous part of the muscle
Attachment: tendon attachment
Origen: the less mobile
Intertion/termination: there can be multiple
Types of muscles attachments
Fleshy:
Aponeurosis: sheet-like
Tendons: structures connect the muscle belly to a bone
Sesamoid bones modify what?
Modify joint dynamics
Tend to be embedded in tendon to protect them from wear
What are synovial bursae?
Viscous fluid that protects tendon as it passes over a point of friction
Bursa has a capsule with outer connective tissue & inner synovial membrane
It has an inner and outer membrane
Where do tendon sheets go?
Over the tendons where a greater portion of the circumference is vulnerable
What are the layers of tendon sheets?
Parietal surface/layer: away from the tendon (viscera)
Visceral layer: toward the tendon (viscera)
They are connected by mesotendon
The yellow space: potential space depends of what is going on it can fill with fluids and change in size. ex: congestive heart failure
What are the associated structures of the muscle?
Fascia: connective tissue (CT) proper that binds the organs of the body together. It has a superficial (dermis) and deep layer (muscles). It holds the muscles together as a group
Use blunt probe to separate muscles and rapture deep fascia
What is the Subserous?
It is the “glue” that supports serous membranes lining body cavities
What is the carotid sheath?
It is part of the deep cervical fascia
What is the plu: Retinacula (sin: Retinaculum)?
It is a thicker fascia: they are bands of connective tissue that holds tendons in place
What is the Annular ligaments?
They surround the tendons going down the digit. Maintain efficiency for the tendons
Accessory carpal bone why is it important?
Carpal tunnel syndrome
Do muscles work individually?
No they operate in concert
What is a prim mover and an agonist?
cooperating muscles
Antoginist muscle is?
Oppose movement
What is a synergist muscle?
Modify action
What is a fixator muscle?
prevent rather than promote movement
What are the muscles of the cubital joint?
m. = singular
mm. = plural
Bicepts brachii (prime mover): flexes the joint and extends the humeral joint
Brachialis (agonist)
Tricepts brachii (antagonist) caudal aspect of the brachium. It has four heads and it is a major extensor muscle
ex: during seizures legs get stiff and shaking bc they brain is sending signals to both agonist and antagonist muscles
Deltoideus: flexor of the humeral joint (antagonist) smooth out the movement
Biceps brachii: at the humeral joint may serve as synergist
Extrinsic muscles do what?
Connect the muscle to the body wall
What are the groups of extrinsic muscles?
Serratus ventralis: serrated face attachment. It goes to three different regions
Origen: ventralis cervics, ventralis thoracis
Insertion: serrated face of the scapula
Action: elevates the trunk
What is the Rhomboideus muscle?
Origen:
Rhomboideus thoracis=dorsal thorax, Rhomboideus capitis=dorsal neck
What is the Rhomboideus muscle?
Origen:
Rhomboideus thoracis=dorsal thorax, Rhomboideus capitis=dorsal neck
Insertion: dorsal border of the scapula and/or cartilage
Action
Intrinsic muscles do what?
Thoracic limb in dog and cat is solely connected to chest by muscle, not bone. Humans have the collar bone that connects limb to the chest.
Intrinsic muscles do what?
Thoracic limb in dog and cat is solely connected to chest by muscle, not bone. Humans have the collar bone that connects limb to the chest.
