quiz #4 Flashcards
What makes up the Anterior Cervical Triangle?
Base: mandible
lateral border: SCM
medial border: Midsagittal plane of the neck
What are the contents of the ACT?
Muscles, arteries, veins lymph nodes, viscera, thyroid, parathyroid
What makes up the Posterior Cervical Triangle?
Base: clavicle
Anterior Border: SCM (posterior border)
Posterior Border: Trapezius
Just inferior to where the pharynx splits into the trachea and the esophagus.
Voice production
Adam’s apple - formed by the thyroid cartilage
Larynx
Anterior to the trachea, inferior to the thyroid cartilage
thyroid gland
What is the trachea made up of?
Cartilaginous rings
One of the only bones in the body to not have direct contact with another bone and is in the anterior neck superior to the thyroid cartilage (part of the larynx)
hyoid bone
Name all 4 suprahyoid bones
1) Mylohyoid
2) Geniohyoid
3) Stylohyoid
4) Digastric
General action of suprahyoids
Elevate the hyoid bone with superior attachments are fixed.
Assist in depressing (lowering) the mandible with the hyoid is fixed.
Superior Attachment: mandible
Inferior Attachment: hyoid bone
Mylohyoid
Superior Attachment: mandible
Inferior Attachment: hyoid bone
Geniohyoid
Superior Attachment: Styloid process of the temporal bone (part of the skull)
Inferior Attachment: Hyoid bone
Stylohyoid
Superior Attachment: inferior border of the mandible
Inferior Attachment: intermediate tendon to hyoid
Digastric (anterior belly)
Superior Attachment: mastoid process
Inferior Attachment: intermediate tendon to hyoid
Digastric (posterior belly)
Name the 4 infrahyoid muscles
1) sternohyoid
2) sternothyroid
3) thyrohyoid
4) omohyoid
General action of infrahyoids
Depress the hyoid bone
Superior Attachment: hyoid bone
Inferior Attachment: manubrium
Sternohyoid
Superior Attachment: thyroid cartilage
Inferior Attachment: manubrium
Sternothyroid
Superior Attachment: hyoid bone
Inferior Attachment: thyroid cartilage
Thyrohyoid
Superior Attachment: hyoid bone
Inferior Attachment: intermediate tendon
Omohyoid (superior belly)
Superior Attachment: intermediate tendon
Inferior Attachment: superior border of the scapula near the suprascapular notch
Omohyoid (inferior belly)
Anterior muscles of the abdomen
Rectus Abdominis
External Oblique
Internal Oblique
Transversus Abdominis
Posterior muscles of the abdomen
Psoas Major
Quadratus Lumborum
Superior Attachment: Costal Cartilage of ribs 5-7. xiphoid process
Inferior Attachment: pubic symphysis and pubic crest
Flexes vertebral column; stabilizes the pelvis during leg lowering; compresses viscera
Rectus Abdominis
Superior/lateral Attachment: Ribs 5-12
Inferior/medial Attachment: Linea alba. pubic tubercle. anterior 1/2 of iliac crest
rotates column to contralateral side; ipsilateral lateral flexion, trunk flexion; stabilizes pelvis during leg-lowering; compress and support viscera
External Oblique
Superior/medial Attachment: Linea alba, Ribs 10-12
Inferior/lateral Attachment: Anterior 1/2 of the iliac crest
Rotates column to ipsilateral side; ipsilateral lateral flexion; trunk flexion; compress and support viscera
Internal Oblique
Lateral Attachment: inner iliac crest, lower 6 costal cartilages, thoracolumbar fascia
Medial attachment: Linea alba
Compress and support viscera
Transversus Abdominis
The aponeurotic attachments of the external oblique, internal oblique and transversus abdominis from a sheath of connective tissue which encases the rectus abdominis muscle. Medially they reconnect to form the linea alba
The Rectus Sheath
Runs vertically from the xiphoid process to the symphysis pubis. The 2 rectus abdominis muscles are separated by the…
Linea Alba
The lateral border of the rectus abdominis and its sheath
The Linea Semilunaris
Superior Attachment: medial 1/2 of rib 12, TVPs of lumbar vertebrae
Inferior attachment: iliac, iliolumbar ligament
Extends the lumbar spine; fixes 12th rib during forced expiration; stabilizes lumbar spine;
Hip fixed: Ipsilateral Lateral Flexion
12th rib fixed: Hip Hike
Quadratus Lumborum
