Exam (elaborations)
VBSC 421 Lab Quiz 4 Muscular System and Joints.
- Course
- Institution
VBSC 421 Lab Quiz 4 Muscular System and Joints.
[Show more]
Seller
Follow
modockochieng06
Content preview
VBSC 421 Lab Quiz 4 Muscular Systemand Joints
Myomere (shark) - ANS-series of muscular segments
Myosepta (shark) - ANS-sheets of connective tissue separating myomeres
Horizontal septa (shark) - ANS-myomeres divided into epaxial and hypaxial portions by
this sheet of connective tissue
Epaxial (shark) - ANS-dorsal muscles
*- extensors/abductors*
Hypaxial (shark) - ANS-ventral muscles
*- flexors/adductors*
Pectoral abductor muscle - ANS-"extensor" muscle
- outside of fin
Pectoral adductor muscle - ANS-"flexor" muscle
- underside of fin (C)
Adductor mandibulae - ANS-jaw muscle of the shark; provides bite strength (C)
Pectoantebrachialis - ANS-Origin: Manubrium (sternum)
Insertion: Proximal antebrachium
Action: adducts forelimb
Pectoralis major - ANS-Origin: Cranial portion of the sternum
Insertion: shaft of humerus
Action: adducts forelimb
Pectoralis minor - ANS-Origin: sternum
Insertion: humerus
Action: adducts forelimb
Xiphihumeralis - ANS-Origin: *median raphe over the xiphoid process*
Insertion: humerus
, Action: adducts forelimb
External oblique - ANS-"Cowboy muscle"
Insertion: linea alba
Action: compresses abdomen
Internal oblique - ANS-Insertion: linea alba
Action: compresses abdomen
Transversus abdominus - ANS-Insertion: Linea alba
Action: compresses abdomen
Rectus abdominus - ANS-Origin: pubis
Insertion: proximal sternum and costal cartilage
Action: flexion of the trunk
Clavotrapezius - ANS-Origin: Lambdoidal ridge, mid dorsal raphe
Insertion: clavicle (raphe)
Action: protracts the forelimb
Clavobrachialis (clavodeltoid) - ANS-Most anterior on forelimb
Origin: Clavicle (raphe)
Insertion: proximal ulna (medial, near elbow)
Action: protracts the forelimb
Acromiotrapezius - ANS-Origin: mid dorsal line
Insertion: metacromion and spine of scapula
Action: adducts and stabilizes the scapula
Spinotrapezius - ANS-Origin: mid dorsal line and thoracic vertebrae
Insertion: over the spine of the scapula
Action: pulls scapula caudally (retraction)
Latissimus dorsi - ANS-Origin: spinous processes of caudal, thoracic, and lumbar
vertebrae
Insertion: medial surface of the humerus
Action: retracts the forelimb
Serratus ventralis - ANS-Origin: surface of ribs and cervical vertebrae
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller modockochieng06. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $7.99. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
80461 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now