Question

1. the outermost meninges layer is

a. pia mater
b. arachnoid mater
c. dura mater
d. dura mater

1. the spider - web - like meninges layer is

a. pia mater
b. epidermis
c. dura mater
d. arachnoid mater

1. cerebrospinal fluid is found beneath the

a. dura mater
b. pia mater
c. white matter
d. arachnoid mater

1. the meninges layer rich in blood vessels

is
a. dura mater
b. arachnoid mater
c. subdural layer
d. pia mater

1. bleeding from head trauma causing

pressure is
a. stroke
b. concussion
c. epilepsy
d. subdural hematoma

1. how many spinal cord segments are

there?
a. 12 c. 24
b. 33 d. 31

1. butterfly - shaped spinal cord area is

a. white matter
b. cerebrospinal fluid
c. nerve roots
d. gray matter

1. which system maintains homeostasis?

a. muscular
b. skeletal
c. digestive
d. nervous

Explanation:

1. The outermost, toughest meninges layer is the dura mater.
2. The spider-web-like middle meninges layer is the arachnoid mater.
3. Cerebrospinal fluid resides in the subarachnoid space, beneath the arachnoid mater.
4. The pia mater is the thin inner meninges layer tightly adhered to the brain/spinal cord, rich in blood vessels.
5. Head trauma can cause bleeding between the dura mater and arachnoid mater, resulting in a subdural hematoma.
6. The spinal cord has 8 cervical, 12 thoracic, 5 lumbar, 5 sacral, and 3 coccygeal segments, totaling 33.
7. The inner, butterfly-shaped region of the spinal cord is gray matter, containing neuron cell bodies.
8. The nervous system (via the brain, spinal cord, and nerves) regulates and maintains bodily homeostasis.

Answer:

1. D. Dura mater
2. B. Arachnoid mater
3. D. Arachnoid mater
4. D. Pia mater
5. D. Subdural hematoma
6. B. 33
7. D. Gray matter
8. D. Nervous