chapter 5 Flashcards
the scalp consist of 5 layers that cover the
calvaria
The first 3 layers of the scalp are collectively called the ___________ and are clinically regarded as a single layer because they remain together when cut during surgery or torn off during an accident
Scalp proper
Which layer of skin of the scalp commonly found containing hair and SUBACEOUS glands
Layer1 (skin)
Which layer of the scalp has close subcutaneous tissue (connective tissue) that is richly VASCULARIZED and well supplied with nerves
Layer 2 (close subcutaneous tissue)
Which layer of the scalp is aponeurosis is a flattened tendon?
Layer 3 (aponeurotica)
What layer of the scalp is found between the frontalis muscle anteriorly and the OCCIPITALIS muscle posteriorly and is also referred to as the EPICRANIUM?
layer 3 (aponeurotica)
Which layer of the scalp is has loose subaponeutotic tissue which allows free movement of the scalp proper?
Layer 4
-remember scalp proper is layers 1-3
Which layer of the scalp has loose connective tissue that allows free movement also contains many potential spaces with fluid and allowing pus or blood to spread easily through here?
layer 4 (loose subaponeurotic tissue)
The veins (emissary vein) connect this layer with the dural sinus and can potentially lead to spread of infection from this layer to the cranial cavity? Which layer is this?
Layer 4 (loose subaponeurotic tissue)
This layer is also known as the DANGER Layer of the scalp?
Layer 4 (loose subaponeurotic tissue)
This layer of the scalp is the deepest, and is firmly anchored to the skull?
layer 5 (pericranium)
S
C
A
L
P
Skin
Close subcutaneous tissue
Aponeurosis
Loose subaponeurotic tissue
Pericranium
What is the name of the blood vessels that connect the danger layer of the scalp to the dural sinus?
The emissary veins
Which is the danger layer?
Layer 4
The cranial bone is made up of __ layers that can be seen when looking at the skull.
3
Cranial Bone: On the external surface of the outer table is ________________________________ which is the 5th layer of the scalp
Periosteum and pericranium
Cranial Bone: The external layer is called the ________________ and is made of compact bone
outer table
Cranial Bone: The middle layer is made of __________________ bone and is called DIPLOE
Spongy bone
Cranial Bone: The internal layer is called the ____________________ and is made of compact bone
inner table
Different cranial bones vary in thickness; the occipital and frontal regions are _____________, and the temporal region is __________________
Thick
thinner
Blood supply to the scalp comes from vessels below, specifically the branches off the ?
External carotid and internal carotid
Branches off the INTERNAL CAROTID ARTERIES supply the?
Frontal region
Branches supplying the temporal and occipital regions come off the?
External carotid
Blood supply of the scalp: Veins accompany the arteries in the __________________________ arrangement (in which 2 veins lie on either side of the artery) and have the same names as the arteries
Venae comitantes
Innervation of the scalp anterior to the external ears is through branches of the 3 divisions CN V, trigeminal nerve:
1) V1, ophthalmic
2) V2, maxillary
3) V3, mandibular
Posterior to the ear, nerve supply to the scalp is from the?
Cervical spinal nerves