Chapter 14 The Brain and Cranial Nerves (by BuGay)

37) Identify the structure labeled "1." A) choroid plexus B) cerebral aqueduct C) third ventricle D) subarachnoid space E) corpus callosum

A) choroid plexus

42) Identify the structure labeled "7." A) dura mater B) lateral ventricle C) fourth ventricle D) subarachnoid space E) filum terminale

A) dura mater

6) The floor of the diencephalon is formed by the A) hypothalamus. B) thalamus. C) brain stem. D) mesencephalon. E) myelencephalon.

A) hypothalamus.

24) Cerebrospinal fluid A) is secreted by ependymal cells. B) is formed by a passive process. C) is normally produced twice as fast as it is removed. D) has almost the same composition as blood plasma. E) contains blood cells and blood plasma.

A) is secreted by ependymal cells.

2) Male brains are typically ________ compared to female brains. A) larger B) smaller C) the same size D) very smooth E) more convoluted

A) larger

8) Autonomic centers that control blood pressure, heart rate, and digestion are located in the A) medulla oblongata. B) pons. C) mesencephalon. D) diencephalon. E) cerebellum.

A) medulla oblongata.

12) As you ascend from the medulla oblongata to the cerebrum, the functions of each successive level become A) more complex. B) simpler. C) better understood. D) more crucial to visceral functions. E) critical to reflexes.

A) more complex.

20) What structure is covered by many blood vessels and adheres tightly to the surface of the brain? A) pia mater B) arachnoid C) dura mater D) cranial plexus E) choroid plexus

A) pia mater

35) The layer of the meninges that closely follows every gyrus and sulcus is the A) pia mater. B) dura mater. C) arachnoid membrane. D) neural cortex. E) subarachnoid mater.

A) pia mater.

3) During embryonic development, which of the following secondary brain vesicles will form the cerebrum? A) telencephalon B) diencephalon C) mesencephalon D) metencephalon E) myelencephalon

A) telencephalon

27) Cerebrospinal fluid enters the blood circulation at the A) jugular veins. B) dural drain. C) arachnoid granulations. D) tentorium cerebelli. E) frontal sinus.

C) arachnoid granulations.

39) Identify the structure labeled "3." A) arbor vitae B) corpora quadrigemina C) cerebral aqueduct D) pons E) diencephalon

C) cerebral aqueduct

16) The third and fourth ventricles are linked by a slender canal designated as the A) central canal. B) tentorium cerebelli. C) cerebral aqueduct. D) interventricular foramina. E) pontine canal.

C) cerebral aqueduct.

40) Identify the structure labeled "4." A) cerebral aqueduct B) lateral ventricle C) lateral aperture D) 4th ventricle E) choroid plexus

C) lateral aperture

48) The respiratory rhythmicity center is located in the A) pons. B) cerebrum. C) medulla oblongata. D) cerebellum. E) midbrain.

C) medulla oblongata.

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

C) prosencephalon

1) The adult human brain contains almost ________ of the body's neural tissue. A) 15 percent B) 25 percent C) 68 percent D) 97 percent E) 35 percent

D) 97 percent

38) What is produced by the structure labeled "2"? A) cerebrospinal fluid B) neurotransmitters C) white matter D) hormones E) red blood cells

A) cerebrospinal fluid

11) A neural cortex is found on the surface of the A) cerebrum. B) pons. C) thalamus. D) midbrain.

A) cerebrum.

34) The cells that cover the outer surfaces of CNS capillary endothelial cells are the A) blastocytes. B) astrocytes. C) monocytes. D) leukocytes. E) lymphocytes.

B) astrocytes.

26) The choroid plexus is composed of A) lymphatic vessels. B) blood vessels. C) nerve fibers. D) ganglia. E) subarachnoid granulations.

B) blood vessels.

45) Identify the structure labeled "10." A) arbor vitae B) central canal C) corpus callosum D) pons E) diencephalon

B) central canal

18) Specialized ________ cells form the secretory component of the choroid plexus. A) epididymal B) ependymal C) appended D) astrocytes E) blood

B) ependymal

15) The most obvious feature that one notices about the cerebrum is the A) smoothness of the surface of the cortex. B) extensiveness of the gyri and sulci. C) small size of it compared to other brain areas. D) transverse fissure running through it. E) color of the cerebrum compared to the other brain areas.

B) extensiveness of the gyri and sulci.

23) The dural fold that projects into the longitudinal fissure between cerebral hemispheres is called the A) dural sinus. B) falx cerebri. C) tentorium cerebelli. D) falx cerebelli. E) choroid plexus.

B) falx cerebri.

7) The tracts that connect the cerebellum to the brain stem are located in the A) medulla oblongata. B) pons. C) mesencephalon. D) diencephalon. E) thalamus.

B) pons.

14) The thin partition that separates the first and second ventricles is the A) falx cerebri. B) septum pellucidum. C) septum insula. D) interventricular foramina. E) cerebral aqueduct.

B) septum pellucidum.

44) Identify the structure labeled "9." A) dura mater B) superior sagittal sinus C) lateral ventricle D) subarachnoid space E) arachnoid granulation

B) superior sagittal sinus

49) Damage to the medulla oblongata can result in death because A) electrical activity originates within the medulla. B) the vital centers for blood pressure, heart rate, and breathing are located there. C) the blood might not be able to circulated properly around the brain. D) control of body temperature and thermoregulation are its functions. E) digestive processes are controlled by the medulla

B) the vital centers for blood pressure, heart rate, and breathing are located there.

33) Which statement is true regarding cerebrospinal fluid? A) CSF is identical in composition to blood plasma. B) CSF is made during fetal development and does not change through the lifetime of the person. C) There is about a liter of CSF within the brain and spinal cord. D) If CSF is not properly resorbed, the result would be hydrocephalus. E) CSF moves back into the blood supply by the process of osmosis.

D) If CSF is not properly resorbed, the result would be hydrocephalus.

5) Which of the following lies between the cerebrum and the brain stem? A) medulla oblongata B) pons C) mesencephalon D) diencephalon E) cerebellum

D) diencephalon

19) The dural sinuses are located in the A) paranasal cavity. B) arachnoid. C) pia mater. D) dural folds. E) tentorium cerebelli.

D) dural folds.

17) The ventricle associated with the pons and upper medulla is the A) first. B) second. C) third. D) fourth. E) lateral.

D) fourth.

21) The brain requires a substantial blood supply. The vessels that deliver blood to the brain are the A) external carotid arteries. B) facial arteries. C) jugular veins. D) internal carotid and vertebral arteries. E) dural sinuses.

D) internal carotid and vertebral arteries.

46) The control of heart rate and blood pressure is based in the A) cerebrum. B) cerebellum. C) diencephalon. D) medulla oblongata. E) heart.

D) medulla oblongata.

9) The cerebellum and pons develop from the A) telencephalon. B) diencephalon. C) mesencephalon. D) metencephalon. E) myelencephalon.

D) metencephalon.

32) Which of the following is not a function of cerebrospinal fluid? A) provides cushioning for delicate neural tissues B) provides buoyant support for the brain C) acts as a transport medium for nutrients D) provides ATP for impulse transmission E) acts as a transport medium for waste products

D) provides ATP for impulse transmission

29) What contains a spider web-like network of cells and fibers through which cerebrospinal fluid flows? A) subdural space B) dural sinus C) falx cerebri D) subarachnoid space E) pia mater

D) subarachnoid space

10) Sensory information is processed and relayed to the cerebrum by the A) medulla oblongata. B) pons. C) midbrain. D) thalamus. E) cerebellum.

D) thalamus.

22) Which of the following is a property of the blood-brain barrier? A) The capillary endothelial cells are interconnected by tight junctions. B) It is generally permeable to lipid-soluble compounds. C) Astrocytes surround the CNS capillaries. D) It is absent in portions of the hypothalamus. E) All of the answers are correct.

E) All of the answers are correct.

28) Which of the following help 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.

30) Ependymal cells work to A) surround the capillaries of the choroid plexus. B) secrete CSF into the ventricles. C) remove waste products from CSF. D) adjust the composition of CSF. E) All of the answers are correct.

E) All of the answers are correct.

31) A brain hemorrhage is life-threatening because A) neurological changes will occur. B) some areas of the brain will not be receiving blood. C) the person can lose consciousness. D) the pressure increase within the space can distort and potentially damage brain tissue. E) All of these problems are related to brain hemorrhages.

E) All of these problems are related to brain hemorrhages.

25) Which statement is true regarding the meninges and cerebrospinal fluid of the spinal cord and brain? A) Spinal fluid is secreted both in the brain and in the spinal cord areas. B) There is an epidural space associated with the spinal meninges, but not with the cranial meninges. C) The meninges around the brain are not the same as those around the spinal cord. D) There is a subarachnoid space within the spinal meninges but not the cranial meninges. E) The choroid plexuses are located only within the brain, not within the spinal cord.

E) The choroid plexuses are located only within the brain, not within the spinal cord.

43) Identify the structure labeled "8." A) pia mater B) dura mater C) corpus callosum D) ventricles E) arachnoid granulation

E) arachnoid granulation

36) Hydrocephalus, or "water on the brain," may result from A) deficient production of cerebrospinal fluid. B) excessive production of cerebrospinal fluid. C) blockage of circulation of CSF. D) excessive water intake. E) blockage of CSF circulation or excessive CSF production.

E) blockage of CSF circulation or excessive CSF production.

47) The medulla oblongata regulates A) somatic motor contractions. B) food intake. C) auditory reflexes. D) vision and hearing E) blood pressure and respiration.

E) blood pressure and respiration.

13) The ________ provides the principal link between the nervous and endocrine systems. A) cerebellum B) medulla oblongata C) cerebrum D) pons E) hypothalamus

E) hypothalamus

50) Jane, a 79-year-old woman, has been diagnosed with a tumor in the brain. She has lost some sensory and motor functions associated with the face, like control of facial muscles for emotion and various sensory functions like taste. In addition, she has some hearing loss and balance problems. The location of the tumor is likely to be the A) cerebellum. B) cerebrum. C) medulla. D) thalamus. E) pons.

E) pons.

41) Identify the structure labeled "6." A) choroid plexus B) fourth ventricle C) lateral ventricle D) cerebral aqueduct E) subarachnoid space

E) subarachnoid space