Study of cranial nerves, blood vessels, sense organs and lymph nodes

Multiple-Choice Questions (MCQs)

1. Which cranial nerve is responsible for the sense of smell?
   • A) Optic Nerve (II)
   • B) Olfactory Nerve (I)
   • C) Trigeminal Nerve (V)
   • D) Facial Nerve (VII)
     Answer: B) Olfactory Nerve (I)
2. What is the primary function of the Optic Nerve (II)?
   • A) Hearing
   • B) Vision
   • C) Smell
   • D) Balance
     Answer: B) Vision
3. Which artery supplies blood to the brain?
   • A) External Carotid Artery
   • B) Internal Carotid Artery
   • C) Jugular Vein
   • D) Subclavian Artery
     Answer: B) Internal Carotid Artery
4. What is the function of the Vagus Nerve (X)?
   • A) Controls eye movements
   • B) Innervates facial muscles
   • C) Controls heart, lungs, and digestive tract functions
   • D) Provides taste sensations
     Answer: C) Controls heart, lungs, and digestive tract functions
5. Which lymph nodes drain lymph from the chin and floor of the mouth?
   • A) Submandibular nodes
   • B) Parotid nodes
   • C) Submental nodes
   • D) Deep cervical nodes
     Answer: C) Submental nodes
6. The jugular furrow is bounded laterally by which muscle?
   • A) Platysma
   • B) Sternocleidomastoid
   • C) Trapezius
   • D) Scalene
     Answer: B) Sternocleidomastoid
7. Which cranial nerve controls tongue movements?
   • A) Hypoglossal Nerve (XII)
   • B) Glossopharyngeal Nerve (IX)
   • C) Vagus Nerve (X)
   • D) Facial Nerve (VII)
     Answer: A) Hypoglossal Nerve (XII)
8. What does the carotid sheath encase?
   • A) Jugular vein only
   • B) Common carotid artery only
   • C) Common carotid artery, internal jugular vein, and vagus nerve
   • D) External jugular vein only
     Answer: C) Common carotid artery, internal jugular vein, and vagus nerve
9. Which nerve is responsible for lateral eye movement?
   • A) Oculomotor Nerve (III)
   • B) Abducens Nerve (VI)
   • C) Trochlear Nerve (IV)
   • D) Trigeminal Nerve (V)
     Answer: B) Abducens Nerve (VI)
10. What is the function of the superficial temporal artery?
    • A) Supplies blood to the brain
    • B) Supplies blood to the face and scalp
    • C) Drains blood from the neck
    • D) Supplies blood to the lungs
      Answer: B) Supplies blood to the face and scalp

True/False Statements

1. The cranial nerves emerge directly from the spinal cord. (False)
2. There are twelve pairs of cranial nerves in animals. (True)
3. The internal jugular vein collects blood from superficial structures in the neck. (False)
4. The glossopharyngeal nerve is involved in taste sensation from the posterior tongue. (True)
5. The vagus nerve innervates only the heart. (False)
6. The jugular furrow contains important neurovascular structures. (True)
7. The olfactory nerve is responsible for vision. (False)
8. The superficial temporal artery supplies blood to the brain. (False)
9. The sternocleidomastoid muscle helps rotate and flex the head. (True)
10. Lymph nodes play a vital role in immune function in animals. (True)

Fill in the Blanks

1. The __________ nerve is responsible for hearing and balance.
   Answer: Vestibulocochlear
2. The __________ artery bifurcates into internal and external carotid arteries.
   Answer: Common carotid
3. The __________ nerve controls most eye movements and pupil constriction.
   Answer: Oculomotor
4. Superficial lymph nodes include submental, submandibular, and __________ nodes.
   Answer: Parotid
5. The __________ sheath encases vital neurovascular elements in the neck.
   Answer: Carotid
6. The __________ muscle divides the neck into anterior and posterior triangles.
   Answer: Sternocleidomastoid
7. The __________ vein drains blood from superficial structures in the neck.
   Answer: External jugular
8. Cranial nerves are traditionally referred to by __________ numerals.
   Answer: Roman
9. The __________ nerve provides taste sensations from the anterior two-thirds of the tongue.
   Answer: Facial
10. The trachea conducts air to the __________.
    Answer: Lungs