Q.1 What is the main function of the brachial plexus?
To control movements of the diaphragm
To provide sensory and motor innervation to the upper limb
To supply blood to the arm
To regulate the sympathetic nervous system
Explanation - The brachial plexus is a network of nerves that controls the motor and sensory functions of the upper limb.
Correct answer is: To provide sensory and motor innervation to the upper limb
Q.2 Which of the following is a common site for muscle strain in the lower back?
Gluteus maximus
Latissimus dorsi
Erector spinae
Pectoralis major
Explanation - The erector spinae muscles are responsible for extending and rotating the spine. They are often strained during activities that involve bending or lifting.
Correct answer is: Erector spinae
Q.3 Which structure passes through the foramen magnum?
Spinal cord
Optic nerve
Vagus nerve
Olfactory bulb
Explanation - The foramen magnum is a large hole in the base of the skull through which the spinal cord passes to connect with the brainstem.
Correct answer is: Spinal cord
Q.4 The phrenic nerve originates from which cervical spinal nerves?
C1-C3
C3-C5
C5-C7
C7-C8
Explanation - The phrenic nerve originates from the cervical spinal nerves C3, C4, and C5 and is responsible for motor control of the diaphragm.
Correct answer is: C3-C5
Q.5 Which of the following is an example of a hinge joint in the human body?
Shoulder joint
Knee joint
Wrist joint
Hip joint
Explanation - A hinge joint allows movement in one plane, similar to the motion of a door hinge. The knee joint is a classic example.
Correct answer is: Knee joint
Q.6 The radial nerve innervates which of the following muscles?
Deltoid
Triceps brachii
Biceps brachii
Flexor carpi radialis
Explanation - The radial nerve innervates the triceps brachii, which is responsible for the extension of the elbow joint.
Correct answer is: Triceps brachii
Q.7 The tibial nerve is a branch of which larger nerve?
Sciatic nerve
Femoral nerve
Obturator nerve
Lumbar nerve
Explanation - The tibial nerve is a branch of the sciatic nerve and innervates muscles in the lower leg and foot.
Correct answer is: Sciatic nerve
Q.8 Which structure is located within the popliteal fossa?
Femoral artery
Tibial nerve
Iliac artery
Common fibular nerve
Explanation - The popliteal fossa is a diamond-shaped space behind the knee, and it contains important structures, including the tibial nerve.
Correct answer is: Tibial nerve
Q.9 What is the anatomical term for the collarbone?
Scapula
Clavicle
Sternum
Humerus
Explanation - The clavicle is also known as the collarbone. It connects the arm to the body and lies horizontally across the top of the chest.
Correct answer is: Clavicle
Q.10 Which of the following ligaments supports the knee joint?
Ankle ligament
Cruciate ligament
Deltoid ligament
Ligamentum flavum
Explanation - The cruciate ligaments (anterior and posterior) are important stabilizers of the knee joint and prevent excessive movements such as hyperextension.
Correct answer is: Cruciate ligament
Q.11 Where is the femoral artery located?
In the thigh
In the arm
In the abdomen
In the neck
Explanation - The femoral artery is the main blood vessel that supplies oxygenated blood to the thigh and lower leg.
Correct answer is: In the thigh
Q.12 What is the function of the cerebellum?
Controls voluntary movement and balance
Regulates heart rate
Processes sensory information
Produces hormones
Explanation - The cerebellum is responsible for coordinating voluntary movements, posture, and balance.
Correct answer is: Controls voluntary movement and balance
Q.13 Which muscle is responsible for closing the mouth?
Masseter
Temporalis
Orbicularis oris
Platysma
Explanation - The masseter muscle is one of the main muscles involved in closing the jaw during chewing.
Correct answer is: Masseter
Q.14 What is the role of the ligamentum flavum?
Stabilizes the knee
Prevents hyperextension of the spine
Protects the heart
Supports the shoulder joint
Explanation - The ligamentum flavum is located in the vertebral column and helps maintain the stability of the spine, preventing excessive hyperextension.
Correct answer is: Prevents hyperextension of the spine
Q.15 Which artery supplies blood to the brain?
Carotid artery
Femoral artery
Subclavian artery
Brachial artery
Explanation - The carotid arteries (common carotid, internal, and external) supply oxygenated blood to the brain, neck, and face.
Correct answer is: Carotid artery
Q.16 What is the function of the diaphragm?
To regulate blood flow
To control digestion
To assist in respiration
To transmit nerve impulses
Explanation - The diaphragm is the primary muscle used in breathing. It contracts to expand the lungs during inhalation and relaxes during exhalation.
Correct answer is: To assist in respiration
Q.17 What is the largest organ in the human body?
Heart
Liver
Skin
Lungs
Explanation - The skin is the largest organ in the human body, serving as a protective barrier and regulating temperature.
Correct answer is: Skin