Chap 7 – Part II (Continuation) The Vertebral Column, Thoracic Cage & Pectoral Girdle Learning Objectives *continued from last lesson

Can you Guess What

’

s Wrong?

(Problems with the Spine)

What ’ s the condition causing the spine to twist?

What ’ s this condition?

And, this condition?

Exploring the Spine,

page 135 Instructions: Number & count how many vertebrae in each region.

How many total bones in the spine?

General Vertebral Bone Markings, pg 136 2

Instructions: Match the bone marking with its anatomical name.

3 4 (opening) 1 a.

b.

c.

d.

e.

Spinous process Vertebral foramen Pedicle Transverse process Body 5

Cervical Vertebrae, pg 137

All vertebrae have a common structural pattern (as seen in previous slide).

C1 (atlas), for example, has no body or spinous process dens Vertebrae of each region also have certain characteristics.

C2 (axis) has a typical body & spine but also features a knoblike tooth called a “

dens

”

Cervical Vertebrae continued C3 – C7 have the following distinguishable characteristics (fill in your notes as I discuss): 1. The_____ is oval – wider from side to side.

2. Except for C7, the ________ ________ is short and split at the top.

3. Vertebral _____ is large and __________. 4. Each transverse process contains a _________ __________ through which the vertebral arteries pass to service the brain.

Thoracic Vertebrae, pg 138 • All ________ with the ribs and have 5 other characteristics: 1. Body is heart-shaped and bears two small ______ (small joints) 2. Vertebral _______ is circular.

3. Spinous _______ is long & points sharply downward.

4. With the exception of T11 – T12, the transverse _______ have facets.

’ 5. Sup. & inf. articular facets lie in the frontal plane (preventing ________ & extension but allows for rotation).

Lumbar Vertebrae , pg 139-140 • Sturdy & larger with 4 other notable characteristics: 1. The ______ and laminae are shorter & thicker than other vertebrae.

2. The spinous ________ are short, flat, and hatchet-shaped.

3. The ______ ________ is triangular.

4.The _____ orientation helps to lock them together.

Sacrum, pg 141 • Forms ___________ wall of the pelvis • Formed by ___ fused vertebrae Coccyx Also known as ______________ Consists of __ fused vertebrae

Bones of the Thoracic Cage, pg 142 manubrium sternum Costal cartilage 7 true ribs Xiphoid process

NOTE: You may want to label pg 142 in textbook also matching it up with this slide.

False ribs Floating ribs (11-12)

Bones of the Pectoral (Shoulder) Consists of: 1. _______ (anteriorly) 2. ________ (posteriorly)

Pectoral Bones, pg 145

Label your practice diagram (all parts).

Scapula, pg 144 Label ONLY red parts.

Practice Review

Instructions: Complete questions on pages 133 – 134, 135, 139, 143 – 144 in your textbook, “The Anatomy Assignment”.