Monday orientation to scalp skull and cranial cavity with severson

Question 1

SCALP (what are the outer layers

Answer 1

Skin
Connective Tissue
Aponeurosis
Loose Connective Tissue
Pericranium

Question 2

Diploic Veins are found in the

Answer 2

Cancellous or Spongy Bone between the two compact layers of the skull

Question 3

Emissary Veins connect

Answer 3

the superficial veins to the dural sinus

Question 4

Medical importance of veins in the skull being valveless

Answer 4

infections of the scalp can enter the dural sinuses

Question 5

layers of the dura. What they do.

Answer 5

2 layers
outer layer is periosteal layer-attaches to the bony skull, contains the meningeal vessels.

inner layer is the meningeal layer-ultimately attached to the periosteal layer. Forms the dural sinuses.

Question 6

meningeal vessels

Answer 6

found in the periosteal layer of the dura. they from grooves on the surface of the cranium.

Question 7

Arachnoid granulations

Answer 7

formed from the arachnoid membrane protrudes through the meningeal layer of the dura and into the dural sinus.

allow CSF to drain into the sinuses and into the blood stream

Question 8

middle meningeal artery

Answer 8

branch of the maxillary artery
enters skull through the foramen spinosum
supplies meninges and bone on lateral skull

Question 9

falx cerebri

Answer 9

separates two hemispheres

attaches at falx cerebelli at the front of the skull and the tentorium cerebelli at the back of the skull

Question 10

epidural hemorrages

Answer 10

involve rupture of a meningeal artery with blood forming a hematoma between the dura and the bone of the skull.

MRI looks rounded and smooth around the hematoma

Question 11

subdural hemorrhages

Answer 11

involve rupture of a cerebral vein, with blood accumulating in the subdural space.
Tearing occurs where the vein crosses the subarachnoid space and enters the dural sinus.

Question 12

subarrachnoid hemorrhages

Answer 12

involve a rupture of a cerebral artery with blood accumulating in the subarachnoid space.