Self-assessment

Lab 1-5 (add Lab 6-11)

Body

A. Identify structure

Transverse foramen; Vertebral a.

B. Identify structure; What goes through this feature?

Transverse process

C. Identify structure

Scapula

A. Identify the bone

Clavicle

B. Identify the bone

Acromion process

C. Identify the structure

Trapezius (reflected)

1. ID structure

Spinal accessory n. (CN XI)

2. ID structure

Transverse cervical a.

3. ID structure

Levator scapulae

4. ID structure

Rhomboid minor

5. ID structure

Rhomboid major

6. ID structure

Rhomboids (reflected)

1. ID structure

Splenius capitis

2. ID structure

Splenius cervicis

3. ID structure

Longissimus

4. ID structure

Iliocostalis

5. ID structure

Semispinalis capitis

6. ID structure

7; 12; 5

How many vertebrae are there in the cervical region? Thoracic? Lumbar?

C1 (atlas); C2 (axis)

Which cervical vertebra doesn’t have a body? Which cervical vertebra has a dens?

Erector spinae

If you bend over from a standing position to pick up an object off the floor, which muscles actively contract to allow you to stand up again?

Epidermis, dermis, superficial fascia, deep fascia, trapezius, rhomboids, erector spinae (likely iliocostalis)

Name in order from superficial to deep tissue layers, including the first 2 muscle layers that would be pierced by a knife wound entering medial to the scapula and adjacent to the scapular spine.

Superficial fascia

Which type of fascia stores fat

Dermis

Given the renewal of cells that occur in one of the layers of the skin, into which layer of skin do you think pigment is injected when making a tattoo.

Dorsal rami provide SM to the deep back m., pass through the superficial back m. without supplying innervation, exit the muscle changing name to posterior cutaneous n. and supplying SS to the overlying skin

How does a posterior cutaneous n. differ from a dorsal ramus

Tension lines formed elastic fibers in the dermis, clinically relevant because they influence wound gaping and healing

What are Langer’s lines and why are they clinically relevant?

External intercosal m.

A. Identify

Costochondral joint

B. Identify

Internal intercostal m.

C. Identify

Internal thoracic (mammary) a.

A. Identify

Superior epigastric a.

B. Identify

Musculophrenic a.

D. Identify

External intercostal m.

C. Identify

Sternum, thoracic vertebrae, R and L ribs

Which bony structures from the walls of the thoracic cavity

Strip of skin innervated by a SS axons associated with a pair of spinal nerves

Define a dermatome.

DRG, Spinal n., Dorsal ramus, Posterior cutaneous n.

Shingles is reactivation of latent varicella zoster virus that is found in DRG, causing blistering on the skin in a dermatomal pattern. In a patient who has lesions on the back just lateral to the posterior midline, what is the pathway taken by the virus?

T4

Which DRG was originally infected in a case of shingles involving a horizontal strip of skin that intersects the nipple?

Yes

Do dermatomes overlap

Esophagus

A. Identify

Trachea

B. Identify

R Brachiocephalic v.

C. Identify

Brachiocephalic trunk

D. Identify

L CCA

E. Identify

L Brachiocephalic v.

F. Identify

L Subclavian a.

G. Identify

Trachea

A. Identify

Superior vena cava (SVC)

B. Identify

Arch of aorta

C. Identify

Esophagus

D. Identify

L5; vertical course of the n. roots in the cauda equina and the height of the intervertebral foramina (higher because of larger vertebral bodies)

Which spinal n. is most likely impinged when the intervertebral disk between L4 and L5 protrudes postereolaterally to the right? What features of the lumbar vertebrae and spinal n. informed your answer?

31; 8 cervical, 12 thoracic, 5 lumbar, 5 sacral, 1 coccygeal

How many spinal cord segments are there and how are they spread across the vertebral regions

Somatosensory and sympathetic post-ganglionic

LA is applied approximately 2 finer breadths to the R of the spinous process of the C7 vertebrae to minimize any pain associated with a procedure. What types of axons are found in the n. that supplies the skin at the region?

Mandible

1. ID bone

Maxilla

2. ID bone

Frontal sinus

3. ID structure

Pituitary fossa

4. ID structure

Occipital

5. ID bone

Lambdoid suture

1. ID structure

Frontal sinus

2. ID structure

Orbital margin

3. Orbit

Maxillary sinus

4. ID structure

Mandibular condyle

5. ID structure

Inferior nasal concha

6. ID structure

Hard palate

ID strucutre

Gonial angle

8. ID strucutre

Petrous ridge

9. ID structure

Groove of middle meningeal a.

1. ID structure

Roof of orbit

2. ID structure

Frontal sinus

3. ID structure

Pituitary fossa

4. ID structure

Petrous ridge

5. ID structure

Sphenoid sinus

6. ID structure

Hard palate

7. ID structure

Mastoid air cells

8. ID structure

Zygomatic arch

1. ID structure

Mandibular condyle

2. ID structure

External auditory meatus

3. ID structure

Mastoid air cells

4. ID structure

Foramen magnum

5. ID structure

Foramen ovale

6. ID structure

Foramen spinosum

7. ID structure

A. Epidural hematoma; B. Subdural hematoma

What are these two conditions?

Cribiform plate

1. ID structure

Optic n. (CN II)

2. ID structure

Internal carotid a. (ICA)

3. ID structure

Occulomotor n. (CN III)

4. ID structure

Trochlear n. (CN IV)

5. ID structure

Trigeminal n. (CN V)

6. ID structure

Abducent n. (CN VI)

7. ID structure

Facial and vestibulocochlear n. (CN VII and VIII)

8. ID structure

Vertebral a.

9. ID structure

Glossopharyngeal and vagus n. (CN IX and X)

10. ID structure

Root of spinal accessory n. (root of CN XI)

11. ID structure

Ophthalmic division of CN V (CN V1)

1. ID structure

Maxillary division of CN V (CN V2)

2. ID structure

Mandibular division of CN V (CN V3)

3. ID structure

Foramen rotundum

4. ID structure

Foramen ovale

5. ID structure

Trochlear n. (CN IV)

6. ID structure

Abducent n. (CN VI)

7. ID structure