Save
Busy. Please wait.
Log in with Clever
or
show password
Forgot Password?
Don't have an account?  Sign up 
Sign up using Clever
or
Username is available taken
show password


Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account. Your email address is only used to allow you to reset your password. See our Privacy Policy and Terms of Service.

Already a StudyStack user? Log In

Reset Password
Enter the associated with your account, and we'll email you a link to reset your password.
focusNode
Didn't know it?
click below
 
Knew it?
click below
Don't Know
Remaining cards (0)
Know
0:00
edit
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

  Normal Size     Small Size show me how

Trunk muscles

Muscles of the trunk and abdominals

QuestionAnswer
Serratus dorsalis - cranial part ORIGIN - throacolumbar fascia, spinous processes T1-6 INSERTION - cranial borders ribs 2-10 ACTION - inspiration POSITION - dorsal surface of thorax, deep to trapezius
Serratus dorsalis - caudal part ORIGIN - lumbar portion of thoracolumbar fascia INSERTION - caudal border ribs 11-13 ACTION - expiration POSITION - dorsal surface of thorax, deep to trapezius
Scalenus ORIGIN - transverse processes cervical vertebrae INSERTION - lateral surface ribs 3-8 (3 different heads) ACTION - neck flexion, unilaterally for lateral flexion
Rectus thoracis ORIGIN - T1 INSERTION - ribs 2-4 ACTION - inspiration POSITION - ventral (inferior) to scalenus
Rectus abdominus ORIGIN - sternum and costal cartilage of ribs INSERTION - unites with pectineus tendon with pre-pubic tendon to pelvis ACTION - compression of abdominal viscera, flexion of trunk, contraction aides expiration, urination, defecation, parturition
Rectus abdominus POSITION Most ventrally located muscle
External abdonimal oblique ORIGIN - 'serration like', ribs 4-12 and trunk fascia INSERTION - broad aponeurosis on ventral part of abdo wall ACTION - compression of abdo viscera, contraction aides expirations, urination, defecation, parturition FORM - fibres run caudoventrally
External intercostal ORIGIN - caudal border of each rib INSERTION - cranial border of next rib (moving caudally) ACTION - inspiration FORM - fibres run caudoventral POSITION - between ribs, externally
Internal intercostal ORIGIN - cranial border of each rib INSERTION - caudal border next rib (moving cranially) ACTION - expiration FORM - fibres run cranioventral
Internal abdominal oblique ORIGIN - tuber coxae INSERTION - rib 13 and cartilage of rib 12 ACTION - abdo compression and visceral support POSITION - lies medial/deep to external abdo oblique
Transversus abdominus ORIGIN - 8th costal cartilages and last lumbar process tuber coxae INSERTION - inner surface rectus abdominus m. ACTION - abdo compression and visceral support POSITION - note fibre direction
Fascia - Linea alba POSITION - ventral midline Separates left and right rectus abdominus
Fascia - Internal rectus sheath ORIGIN - created by the aperneurosis of external abdo oblique, interal abdo oblique and transversarius POSITION - thicker cranially, not evident caudal to caudal border of internal abdo oblique
Fascia - External rectus sheath ORIGIN - created by the aperneurosis of external and internal abdo obliques
Inguial canal - External ring Male- passage for process vaginalis and descent of testicles Females - vaginal process, round ligament and fat
Pelvis - Levator ani ORIGIN - medial edge shaft of ilium, pelvic symphysis INSERTION - 7th caudal vertebrae ACTION - press tail against anus, unilaterally lift tail cranial and lateral POSITION - medial and caudal to coccygeus
Pelvis - Coccygeus ORIGIN - ischiatic spine INSERTION - transverse process 2-5 caudal vertebrae ACTION - press tail against anus, lateral flexion POSITION - lateral to levator ani
Pelvis - Sacrotuberous ligament ORIGIN - sacrum INSERTION - ischial tuberosity
Diaphragm - Central tendon FORM - up to 21% of surface area POSITION - surrounded by muscular portion
Costal muscular part of diaphragm INSERTION - medial aspect of ribs POSITION - largest section
Sternal muscular part of diaphragm POSITION - smallest section
Lumbar muscular part of diaphragm INSERTION - ventral side of lumbar vertebrae
Created by: tazza261
Popular Veterinary sets

 

 



Voices

Use these flashcards to help memorize information. Look at the large card and try to recall what is on the other side. Then click the card to flip it. If you knew the answer, click the green Know box. Otherwise, click the red Don't know box.

When you've placed seven or more cards in the Don't know box, click "retry" to try those cards again.

If you've accidentally put the card in the wrong box, just click on the card to take it out of the box.

You can also use your keyboard to move the cards as follows:

If you are logged in to your account, this website will remember which cards you know and don't know so that they are in the same box the next time you log in.

When you need a break, try one of the other activities listed below the flashcards like Matching, Snowman, or Hungry Bug. Although it may feel like you're playing a game, your brain is still making more connections with the information to help you out.

To see how well you know the information, try the Quiz or Test activity.

Pass complete!
"Know" box contains:
Time elapsed:
Retries:
restart all cards