,1. Which structure is not part of the central nervous system?
A. Brain
B. Spinal Cord
C. Sciatic Nerve
D. Brainstem
Correct Answer: C. Sciatic Nerve
Rationale: The sciatic nerve is part of the peripheral nervous
system, which connects the central nervous system to the limbs
and organs.
2. What type of bone is the femur?
A. Long Bone
B. Short Bone
C. Flat Bone
D. Irregular Bone
Correct Answer: A. Long Bone
Rationale: The femur is classified as a long bone due to its
elongated shape and the role it plays in supporting the weight of
the body.
3. Which muscle is primarily responsible for the flexion of the
elbow joint?
A. Biceps Brachii
B. Triceps Brachii
C. Brachialis
D. Anconeus
Correct Answer: A. Biceps Brachii
Rationale: The biceps brachii is the major muscle involved in
the flexion of the elbow, working across the joint to bring the
forearm towards the shoulder.
4. The endocrine system regulates various bodily functions
through the release of:
, A. Neurotransmitters
B. Hormones
C. Enzymes
D. Electrolytes
Correct Answer: B. Hormones
Rationale: Hormones are the chemical messengers of the
endocrine system, orchestrating a range of physiological
processes by acting on target organs.
5. Which hormone is primarily involved in the regulation of
metabolism?
A. Insulin
B. Thyroxine
C. Cortisol
D. Testosterone
Correct Answer: B. Thyroxine
Rationale: Thyroxine, produced by the thyroid gland, plays a
crucial role in metabolism, influencing the rate at which cells
convert nutrients into energy.
6. The axial skeleton includes all of the following except:
A. Skull
B. Ribcage
C. Pelvis
D. Vertebral Column
Correct Answer: C. Pelvis
Rationale: The pelvis is part of the appendicular skeleton, which
includes bones of the limbs and girdles that connect them to the
axial skeleton.
7. Which part of the nervous system is responsible for the 'fight or
flight' response?
A. Central Nervous System
, B. Somatic Nervous System
C. Autonomic Nervous System
D. Enteric Nervous System
Correct Answer: C. Autonomic Nervous System
Rationale: The autonomic nervous system controls involuntary
actions and the sympathetic division specifically mediates the
'fight or flight' response.
8. Osteoblasts are cells that:
A. Break down bone tissue
B. Form new bone tissue
C. Create cartilage
D. Destroy cartilage
Correct Answer: B. Form new bone tissue
Rationale: Osteoblasts are specialized cells that synthesize and
secrete the bone matrix, leading to the formation of new bone.
9. Muscle tissue that is involuntary and found in the walls of
internal organs is known as:
A. Skeletal Muscle
B. Cardiac Muscle
C. Smooth Muscle
D. Striated Muscle
Correct Answer: C. Smooth Muscle
Rationale: Smooth muscle is not under conscious control and is
found in the walls of organs such as the stomach, intestines, and
blood vessels.
10. The hypothalamus interacts directly with the:
A. Heart
B. Lungs
C. Pituitary Gland
D. Liver
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