Chapter 13

24) Cerebrospinal fluid enters the subarachnoid space through the

D) lateral and median apertures.

41) The cardiovascular reflexes are based in the

D) medulla oblongata.

43) The control of heart rate and blood pressure is based in the

D) medulla oblongata.

30) Which of the following is not a function of cerebrospinal fluid?

D) provides ATP for impulse transmission

21) What contains a spider web-like network of cells and fibers through which cerebrospinal fluid flows?

D) subarachnoid space

9) Sensory information is processed and relayed to the cerebrum by the

D) thalamus.

31) Which of these dural folds is mismatched with its location?

A) falx cerebri; transverse fissure

28) The choroid plexuses produces CSF at a rate of about

A) 500 mL/day.

7) The floor of the diencephalon is formed by the

A) hypothalamus.

22) Cerebrospinal fluid

A) is secreted by ependymal cells.

5) Male brains are typically ________ compared to female brains.

A) larger

11) Autonomic centers that control blood pressure, heart rate, and digestion are located in the

A) medulla oblongata.

19) What structure is covered by many blood vessels and adheres tightly to the surface of the brain?

A) pia mater

8) ________ are chambers within the brain that contain cerebrospinal fluid.

B) Ventricles

17) The cells that cover the outer surfaces of CNS capillaries cells are the

B) astrocytes.

27) Specialized ________ cells form the secretory component of the choroid plexus.

B) ependymal

20) The dural fold that projects into the longitudinal fissure between cerebral hemispheres is called the

B) falx cerebri.

10) The tracts that connect the cerebellum to the brainstem are located in the

B) pons.

44) ________ is the term used to describe the crossing over of a tract to the side of the nervous system opposite to where the axons originated.

C) Decussation

Which of the following is not one of the main divisions of the adult brain? A) cerebrum B) diencephalon C) prosencephalon D) midbrain E) pons

C) Prosencephalon

14) The third and fourth ventricles are linked by a slender canal designated as the

C) cerebral aqueduct.

33) As CSF circulates, ________ between it and the interstitial fluid of the CNS is unrestricted between and across the ependymal cells.

C) diffusion

42) The respiratory rhythmicity center is located in the

C) medulla oblongata.

25) Cerebrospinal fluid enters the blood circulation at the

C) superior sagittal sinus.

23) Absorption at the arachnoid granulations returns CSF to the

C) venous circulation.

18) The dural sinuses are located in the

D) dural folds.

32) Which of the following help(s) to protect the brain? A) the blood-brain barrier B) the bones of the skull C) the cranial meninges D) the CSF E) All of the answers are correct.

E) All of the answers are correct.

29) The layer of the meninges that closely follows every gyrus and sulcus is the

A) pia mater.

6) During embryonic development, which of the following secondary brain vesicles will form the cerebrum?

A) telencephalon

4) The adult human brain contains almost ________ of the body's neural tissue.

D) 97 percent

12) The thin partition that separates the lateral ventricles is the

B) septum pellucidum.

45) Cardiovascular centers that adjust the heart rate, the strength of cardiac contractions, and the flow of blood through the peripheral tissues are located within autonomic centers in the medulla oblongata along with the A) reticular formation. B) respiratory rhythmicity centers. C) solitary nucleus. D) All of the answers are correct. E) None of the answers is correct.

D) All of the answers are correct.

39) The nucleus gracilis and nucleus cuneatus A) are located in the medulla oblongata. B) relay somatic sensory information to the thalamus. C) pass motor information to the cerebellum. D) are located in the medulla oblongata and relay somatic sensory information to the thalamus. E) All of the answers are correct.

D) are located in the medulla oblongata and relay somatic sensory information to the thalamus.

2) Which of the following lies between the cerebrum and the brainstem?

D) diencephalon

16) Two large venous sinuses, the sagittal sinuses, lie within a dural fold called the

D) falx cerebri.

15) The ventricle associated with the pons and upper medulla is the

D) fourth.

13) Each lateral ventricle communicates with the third ventricle through a(n)

D) interventricular foramen.

3) The cerebellum and pons develop from the

D) metencephalon.

46) The white matter of the cerebellum forms a branching array called the

E) arbor vitae.

26) The neural tissue is isolated from the general circulation by the

E) blood-brain barrier.

40) The pons contains all of the following structures except the

E) vasomotor centers.