**NUR 110 Exam 4 Study Guide: Cranial Nerves and Sensory
Systems**
**1. What is the primary function of glands in the endocrine system?**
A. Filter blood
B. Secrete enzymes for digestion
C. Secrete hormones that regulate body processes
D. Protect against infection
**Answer:** C. Secrete hormones that regulate body processes
---
**2. What does the central sulcus separate?**
A. Temporal and occipital lobes
B. Frontal and parietal lobes
C. Parietal and temporal lobes
D. Cerebellum and brainstem
**Answer:** B. Frontal and parietal lobes
---
**3. The lateral sulcus separates which brain lobes?**
A. Frontal and occipital lobes
B. Parietal and occipital lobes
C. Parietal and temporal lobes
D. Frontal and cerebellum
**Answer:** C. Parietal and temporal lobes
---
**4. What structure divides the cerebrum into left and right hemispheres?**
A. Corpus callosum
B. Lateral ventricle
C. Central sulcus
D. Medulla oblongata
**Answer:** A. Corpus callosum
---
**5. Which cells myelinate axons in the peripheral nervous system (PNS)?**
A. Oligodendrocytes
B. Astrocytes
C. Schwann cells
D. Microglia
**Answer:** C. Schwann cells
---
**6. What is the role of interneurons in the central nervous system (CNS)?**
1
,A. Sensory input
B. Muscle contraction
C. Connect sensory and motor neurons
D. Hormone production
**Answer:** C. Connect sensory and motor neurons
---
**7. What is the main function of the cerebellum?**
A. Memory formation
B. Hormone regulation
C. Muscle coordination and tone
D. Vision processing
**Answer:** C. Muscle coordination and tone
---
**8. Insulin is released in response to:**
A. Low blood sugar
B. Stress
C. High blood sugar
D. Infection
**Answer:** C. High blood sugar
---
**9. Glucagon is released in response to:**
A. Low blood sugar
B. High blood sugar
C. Dehydration
D. Sleep
**Answer:** A. Low blood sugar
---
**10. What is a function of cortisol from the adrenal cortex?**
A. Stimulates ovulation
B. Promotes inflammation
C. Burns fat and protein for energy
D. Regulates sodium levels
**Answer:** C. Burns fat and protein for energy
---
**11. Afferent nerves carry impulses from:**
A. CNS to PNS
B. Muscles to bones
C. PNS to CNS
D. Glands to skin
2
, **Answer:** C. PNS to CNS
---
**12. Efferent nerves carry impulses from:**
A. PNS to CNS
B. Brain to glands only
C. CNS to PNS
D. Muscles to joints
**Answer:** C. CNS to PNS
---
**13. What is the function of Cranial Nerve I (Olfactory)?**
A. Vision
B. Taste
C. Smell
D. Hearing
**Answer:** C. Smell
---
**14. Which cranial nerve controls most facial expressions and tear/saliva secretion?**
A. Cranial Nerve VI
B. Cranial Nerve VII
C. Cranial Nerve IX
D. Cranial Nerve X
**Answer:** B. Cranial Nerve VII
---
**15. Which cranial nerve is responsible for shoulder movement and head rotation?**
A. Accessory (XI)
B. Vagus (X)
C. Hypoglossal (XII)
D. Oculomotor (III)
**Answer:** A. Accessory (XI)
---
**16. What does the vagus nerve (Cranial Nerve X) primarily control?**
A. Vision and eye movement
B. Smell and taste
C. Sensory from visceral organs and smooth muscle contraction
D. Tongue movement
**Answer:** C. Sensory from visceral organs and smooth muscle contraction
---
3
Systems**
**1. What is the primary function of glands in the endocrine system?**
A. Filter blood
B. Secrete enzymes for digestion
C. Secrete hormones that regulate body processes
D. Protect against infection
**Answer:** C. Secrete hormones that regulate body processes
---
**2. What does the central sulcus separate?**
A. Temporal and occipital lobes
B. Frontal and parietal lobes
C. Parietal and temporal lobes
D. Cerebellum and brainstem
**Answer:** B. Frontal and parietal lobes
---
**3. The lateral sulcus separates which brain lobes?**
A. Frontal and occipital lobes
B. Parietal and occipital lobes
C. Parietal and temporal lobes
D. Frontal and cerebellum
**Answer:** C. Parietal and temporal lobes
---
**4. What structure divides the cerebrum into left and right hemispheres?**
A. Corpus callosum
B. Lateral ventricle
C. Central sulcus
D. Medulla oblongata
**Answer:** A. Corpus callosum
---
**5. Which cells myelinate axons in the peripheral nervous system (PNS)?**
A. Oligodendrocytes
B. Astrocytes
C. Schwann cells
D. Microglia
**Answer:** C. Schwann cells
---
**6. What is the role of interneurons in the central nervous system (CNS)?**
1
,A. Sensory input
B. Muscle contraction
C. Connect sensory and motor neurons
D. Hormone production
**Answer:** C. Connect sensory and motor neurons
---
**7. What is the main function of the cerebellum?**
A. Memory formation
B. Hormone regulation
C. Muscle coordination and tone
D. Vision processing
**Answer:** C. Muscle coordination and tone
---
**8. Insulin is released in response to:**
A. Low blood sugar
B. Stress
C. High blood sugar
D. Infection
**Answer:** C. High blood sugar
---
**9. Glucagon is released in response to:**
A. Low blood sugar
B. High blood sugar
C. Dehydration
D. Sleep
**Answer:** A. Low blood sugar
---
**10. What is a function of cortisol from the adrenal cortex?**
A. Stimulates ovulation
B. Promotes inflammation
C. Burns fat and protein for energy
D. Regulates sodium levels
**Answer:** C. Burns fat and protein for energy
---
**11. Afferent nerves carry impulses from:**
A. CNS to PNS
B. Muscles to bones
C. PNS to CNS
D. Glands to skin
2
, **Answer:** C. PNS to CNS
---
**12. Efferent nerves carry impulses from:**
A. PNS to CNS
B. Brain to glands only
C. CNS to PNS
D. Muscles to joints
**Answer:** C. CNS to PNS
---
**13. What is the function of Cranial Nerve I (Olfactory)?**
A. Vision
B. Taste
C. Smell
D. Hearing
**Answer:** C. Smell
---
**14. Which cranial nerve controls most facial expressions and tear/saliva secretion?**
A. Cranial Nerve VI
B. Cranial Nerve VII
C. Cranial Nerve IX
D. Cranial Nerve X
**Answer:** B. Cranial Nerve VII
---
**15. Which cranial nerve is responsible for shoulder movement and head rotation?**
A. Accessory (XI)
B. Vagus (X)
C. Hypoglossal (XII)
D. Oculomotor (III)
**Answer:** A. Accessory (XI)
---
**16. What does the vagus nerve (Cranial Nerve X) primarily control?**
A. Vision and eye movement
B. Smell and taste
C. Sensory from visceral organs and smooth muscle contraction
D. Tongue movement
**Answer:** C. Sensory from visceral organs and smooth muscle contraction
---
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