Question

drag each term from the answer bank to identify the coverings of the brain.
dura mater
pia mater
answer bank
arachnoid
periosteum
subarachnoid space subdural space

Explanation:

1. The outermost layer adjacent to the skull is the Periosteum.
2. The layer deep to the periosteum is the Dura mater, and the space between them (already labeled in the diagram) is a potential space, but the unlabeled outer blank matches Periosteum.
3. Deep to the Dura mater is the Subdural space (potential space between dura and arachnoid).
4. Next is the Arachnoid layer.
5. Between the Arachnoid and Pia mater is the Subarachnoid space (contains cerebrospinal fluid).
6. The innermost layer adhering to brain tissue is the Pia mater (already labeled).

Mapping the unlabeled blanks from outermost to innermost:

• Top left blank (outermost): Periosteum
• Bottom middle blank (between dura and arachnoid): Subdural space
• Bottom right blank (between arachnoid and pia): Subarachnoid space
• The remaining answer bank term, Arachnoid, corresponds to the layer between the subdural and subarachnoid spaces (the middle unlabeled tissue layer, which would connect to an implied blank, but based on the given labeled lines: the blank connected to the layer between dura and pia is Arachnoid)

Answer:

• Top left blank: Periosteum
• Middle unlabeled layer (between dura and pia): Arachnoid
• Bottom middle blank: Subdural space
• Bottom right blank: Subarachnoid space

(Ordered from outermost to innermost brain coverings and associated spaces)