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ANAT 380 Module 5 - Back + Axilla Exam
Questions And Answers
Sacral Canal - Answers✔A continuation of vertebral canal terminating at sacral hiatus. Cauda equina and
filum terminale are protected by it.
Sacral Foramina - Answers✔4 sacral foramen located lateral to body of sacrum on both anterior and
posterior sides. Decreases in size as you go down. Anterior and posterior rami can exit here.
Sacral Coruna - Answers✔2 boney processes on posterior sacrum below sacral hiatus.
Promontory - Answers✔At upper base of sacrum (top) where it articulates with L5, a forward projection
that decreases anteroposterior diameter of pelvic brim.
Coccyx - Answers✔Tailbone. Composed of 4 fused rudimentary coccygeal vertebrae that articulate
superiorly with the sacrum at the sacrococcygeal joint.
Attachment site for ligaments and muscles such as pelvic floor.
Important in posture.
Vertebral Column Trends - Answers✔As you go superior to inferior, vertebral body increases (to support
weight) while vertebral foramen decreases (since spinal nerves exit as you go down)
Accessory Ligaments of Vertebral Column - Answers✔Strong fibrous bands of tissue that stabilize the
vertebral column and protect the intervertebral discs.
3 major ones:
- Ligamentum flavum (behind disc)
- Anterior longitudinal ligament (font side of disc)
- Posterior longitudinal ligament (back side of disc)
Extrinsic Muscles of Back - Answers✔Latissimus Dorsi
Trapezius
Rhomboids Major
ALL RIGHTS RESERVED.
ANAT 380 Module 5 - Back + Axilla Exam
Questions And Answers
Sacral Canal - Answers✔A continuation of vertebral canal terminating at sacral hiatus. Cauda equina and
filum terminale are protected by it.
Sacral Foramina - Answers✔4 sacral foramen located lateral to body of sacrum on both anterior and
posterior sides. Decreases in size as you go down. Anterior and posterior rami can exit here.
Sacral Coruna - Answers✔2 boney processes on posterior sacrum below sacral hiatus.
Promontory - Answers✔At upper base of sacrum (top) where it articulates with L5, a forward projection
that decreases anteroposterior diameter of pelvic brim.
Coccyx - Answers✔Tailbone. Composed of 4 fused rudimentary coccygeal vertebrae that articulate
superiorly with the sacrum at the sacrococcygeal joint.
Attachment site for ligaments and muscles such as pelvic floor.
Important in posture.
Vertebral Column Trends - Answers✔As you go superior to inferior, vertebral body increases (to support
weight) while vertebral foramen decreases (since spinal nerves exit as you go down)
Accessory Ligaments of Vertebral Column - Answers✔Strong fibrous bands of tissue that stabilize the
vertebral column and protect the intervertebral discs.
3 major ones:
- Ligamentum flavum (behind disc)
- Anterior longitudinal ligament (font side of disc)
- Posterior longitudinal ligament (back side of disc)
Extrinsic Muscles of Back - Answers✔Latissimus Dorsi
Trapezius
Rhomboids Major
