Massage and Bodywork Licensing Examination MBLEx Anatomy and Physiology Questions and Answers 2 — Questions and Answers
Question 1: Which muscle is the primary flexor of the forearm at the elbow joint?
- Brachialis (Correct answer)
- Triceps brachii
- Anconeus
- Pronator teres
Correct answer: Brachialis
The brachialis is the primary flexor of the forearm at the elbow, lying deep to the biceps brachii.
Question 2: What type of connective tissue wraps around an individual muscle fiber?
- Endomysium (Correct answer)
- Perimysium
- Epimysium
- Fascia
Correct answer: Endomysium
Endomysium is the thin connective tissue sheath that surrounds each individual muscle fiber.
Question 3: The thoracic duct of the lymphatic system empties into which vein?
- Left subclavian vein (Correct answer)
- Right subclavian vein
- Superior vena cava
- Left internal jugular vein
Correct answer: Left subclavian vein
The thoracic duct drains lymph from most of the body and empties into the left subclavian vein.
Question 4: Which type of joint allows movement in only one plane, such as flexion and extension?
- Hinge joint (Correct answer)
- Ball-and-socket joint
- Pivot joint
- Saddle joint
Correct answer: Hinge joint
A hinge joint, such as the elbow, permits movement in only one plane, primarily flexion and extension.
Question 5: Which cranial nerve is responsible for controlling the muscles of facial expression?
- Facial nerve (CN VII) (Correct answer)
- Trigeminal nerve (CN V)
- Glossopharyngeal nerve (CN IX)
- Vagus nerve (CN X)
Correct answer: Facial nerve (CN VII)
The facial nerve (CN VII) innervates the muscles of facial expression including the orbicularis oculi and zygomaticus.
Question 6: What is the function of the sinoatrial (SA) node in the heart?
- It initiates the electrical impulse that sets heart rate (Correct answer)
- It delays the impulse between atria and ventricles
- It distributes the impulse through the ventricular septum
- It contracts the papillary muscles
Correct answer: It initiates the electrical impulse that sets heart rate
The SA node acts as the heart's natural pacemaker by generating electrical impulses that initiate each heartbeat.
Massage and Bodywork Licensing Examination MBLEx Anatomy and Physiology Questions and Answers 2
Which muscle is the primary flexor of the forearm at the elbow joint?