Lab 1: Neck, withers and thorax Flashcards
which structure helps support the heavy head?
hint it’s a ligament
nuchal ligament (funicular part)
what is the origin and insertion of the cutaneous colli muscle?
origin: manubrium of the sternum
insertion: fascia of the shoulder
which vein is contained within the jugular groove?
the external jugular vein
the jugular vein lies between which two muscles?
the sternocephalicus muscle ventrally and the brachiocephalicus muscle dorsally
where is venipuncture commonly performed?
in the external jugular within the cranial half of the jugular groove
the brachiocephalicus is made up of a cranial division and caudal division. what are their names?
cranial division: cleidomastoideus
caudal division: cleidobrachialis
where do the divisions of the brachiocephalicus insert?
the cranial division inserts: on the mastoid process of the temporal bone. from there it continues as the caudal division to insert on the humerus
what is the origin and insertion of the omotransversarius muscle?
origin: at the shoulder
inserts: on the transverse processes of the cervical vertebrae
what does the accessory nerve innervate?
the cranial portion of the trapezius cervicis
the omohyoideus muscle occupies the space between what two structures?
the external jugular vein and the carotid sheath
What is the AXIAL skeleton composed of?
vertebral column, ribs, sternum, and skull
What is the APPENDICULAR skeleton composed of?
bones of the limbs
vertebral formula for the horse
C7 T18 L6 S5 Cd15-21
Three main parts of a typical vertebra
body, arch, processes
What part of vertebrae connects to muscles and ligaments?
spinous processes
fx of cervical vertebrae
enhance the functions of support and movement of the head
First vertebra =
atlas
second vertebra =
axis
canal that spinal cord runs through is known as:
vertebral (or spinal) canal
what occurs at vertebral notch?
two adjacent vertebrae form an intervertebral foramen for the passage of spinal nerves and accompanying vessels
what structures are missing from atlas that are found on other vertebrae?
body and spinous processes
fx of lateral vertebral foramen in the atlas
accommodates passage of vertebral vessels and first cervical nerve
wings of the atlas are considered modified what?
transverse processes. A palpable landmark
fx of transverse and alar foramens of atlas
accommodates passage of vertebral vessels. The alar foramen is connected with the lateral foramen by a short groove
fx of lateral vertebral foramen in the axis
passage of the C2 and vertebral vessels
which cervical vertebra usually has no transverse foramen?
7th cervical vertebra
