Muscles that move the backbone
Terms
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- What muscle originates on the ligamentum nuchae and spinous processes of 7th cervical vertebra and inserts on the occipital bone?
- Splenius capitis
- What is the action of the Spenius Capitus?
- Rotates head to same side as contracting muscle
- Where does the Splenius cervicis originate and insert?
- Spinous processes of 3rd-6th thoracic vertabrae, and transverse processes of cervical vertabrae
- What is the action of the splenius cervicis?
- It acts together with the splenius capitus to rotate head to same side
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What are the Erector Spinae also known as?
a. erector vertabrae muscles
b. sacral spinalis muscles
c. thoracolumbar muscles
d. cervi thora capa muscles - B. Sacral Spinalis muscles
- Name the 3 muscles that work together to maintain erect posture and laterally flex.
- Iliocostalis cervicis, I. thoracis, and I. lumborum
- Where does the iliocostalis cervicis originate and insert?
- Superior six ribs, and transverse processes of the 4th -6th cervical vertebrae.
- Where does the Iliocostalis thoracis originate and insert?
- Inferior 6 ribs , and superior six ribs
- Where does the Iliocostalis lumborum originate and insert?
- Iliac crest, and inferior six ribs
- What muscle originates on the transverse processes and inserts on the mastoid process of the temperal bone?
- Longissimus Capitis
- What is the action of the longissimus capitus?
- Extend head and rotate to same side
- What muscle does the longissimus capitis work with to perform extention?
- Longissimus cervicis
- Where does the longissimus cervicis originate and insert?
- Transverse processes of thoracic vertebrae, Transverse processes of cervical vertabrae
- What muscle originates on the transverse processes of the lumbar vertabrae and inserts on all thorasic transverse processes and laterally flexes the spine?
- Longissimus Thoracis
- What muscle arises from the semispinalis capitis and inserts on the occipiyal bone?
- Spinalis capitis
- What muscle originates on the spinous process of the 7th cervical vertabra and inserts on the spinous process of C-2?
- Spinalis cervicis
- Where does spinalis thoracis originate and insert?
- Spinous processes of the lumbar and inferior thoracis vertabrae, spinous process of superior thoracic vertabrae
- Acting together, what is the action of the Spinalis capitis, S. cervicis and S. thoracis?
- Extend vertebral column and keep body erect
- Name the three muscles of the spinalis group.
- Spinalis capitis, S. Cervicis, and S. thoracis
- What is the mass of muscles called that forms the prominent bulge of the back?
- Erector Spinae (or sacral spinalis muscles)
- Where does the semispinalis capitis originate and insert?
- Transverse processes of thoracic and cervical vertabrae, and occipital bone
- What is the action of the semispinalis capitis, Ss. cervicis, and Ss. thoracis?
- rotate head to opposite side
- Where do the Ss. Cervicis and Ss. Thoracis originate and insert?
- Transverse processes , and Spinous processes
- what muscle originates on th sacrum, ilium and transverse processes and inserts on the spinous processes of a more superior vertebra?
- Multifidus
- What muscle originates only on all transverse processes and inserts on the spinous process of the one above?
- Rotatores
- What is the action of the multifidus?
- rotate head to opposite side
- What is the action of the rotatores?
- rotate vertebral column to opposite side
- Where does the interpinales originate and insert?
- Superior surface of all spinous processes, and inferior surface of spinalis process superior to the one of origin
- Where do the intertransversarii originate and insert?
- transverse processes, and transverse processes of the one above
- What is the action of the interspinales?
- extend vertebral column
- What is the action of the intertransverii?
- laterally flex and stabalize spine
- What is the action of the scalenes as they work together?
- flex head, elevate first ribs during forced inhalation, and laterally flex and rotate head to opposite side
- What two muscles of the neck are well known for arteies, veins and nerves to pass through on their way to the arm?
- Anterior and middle scalenes
- Where does the anterior and middle scalene originate and insert?
- transverse process of cervical vertabrae, and first rib
- where does the posterior scalen originate and insert?
- transverse processes, and second rib
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This group of muscle is named so because their fibers run from the transverse processes to the spinous processes of the vertebrae.
a. interspinales
b. segmental
c. transversospinales
d. scalenes - C. Transversospinales
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A rupture or tear in one of the inner thigh muscles is called what?
a. Groin Pull
b. Strain
c. Ruptured Groin
d. Sprained Crotch - A. Groin pull
- What does RICE stand for?
- Rest, Ice, Compression, Elevation
- What are the 2 muscles of the iliopsoas?
- Psoas major and iliacus
- What is the nerve innervation for the psoas major?
- Lumbar spinal nerves L2-L3
- where does the psoas major originate and insert?
- Transverse processes and bodies of lumbar vertabrae (as well as discs), into lesser trochanter of femur
- What 2 muscles insert on the lesser trochanter of the femer?
- psoas major and iliacus
- What is the action of the psoas major and iliacus as they work together?
- flex thigh, rotate thigh laterally and flex trunk on hip as sitting
- Where does the iliacus originate?
- iliac fossa and sacrum
- Where does the gluteus maximus originate and insert?
- iliac crest, sacrum and coccyx-and gluteal tuberosity
- What is the action of gluteus max?
- Extend thigh, laterally rotate and adduct
- where do gluteus medius and G. Minimus originate and insert?
- ilium, and greater trochanter of femur
- What is the action or G. medius and G. Minimus?
- Abduct and medially rotate thigh
- Where does the tensor fasciae latae originate and insert?
- ASIS, and tibia by way of iliotibial tract
- What does the tesor fasciae latae do?
- flexes and abducts
- Name the 5 muscle that laterally rotate and abduct the thigh.
- Piriformis, obturator internus, obturator externus, superior gemelius, inferior gemelius
- where does the piriformis originate and insert?
- Anterior sacrum, and greater trochanter
- What muscle originates on the outer surface of the obturator and inserts on the greater trochanter?
- Obturator externus
- What muscle originates on the inner surface of the obturator?
- Obturator internus
- What muscle originates on the ischial spine and inserts on the greater trochanter?
- Superior gemellus
- Where does the inferior gemellus originate and insert?
- Ischial tuberosity and greater troch.
- O and I of Quadratus femoris
- Ischial tuberosity and intertrochanteric crest
- What 3 muscles originate on the pubis and insert on the linea aspera?
- Adductor longus, A. brevis, and A. magnus
- What is the action of all 3 adductor muscles?
- adduct, flex and medially rotate
- What is the nerve innervation for the 3 adductor muscles?
- Obturator nerve
- Where does the pectineus originate and insert?
- Pubis and pectineal line of femur