Nervous System
What is the primary function of the central nervous system (CNS)?
To process sensory information and control motor responses
What is the primary function of the cardiovascular system?
To transport nutrients and oxygen throughout the body
What is the main muscle responsible for breathing?
Diaphragm
The hormone adrenaline is produced by which gland?
A) Thyroid gland
B) Adrenal glands
C) Pituitary gland
D) Pancreas
Adrenal glands
Which part of the neuron receives signals from other neurons?
Dendrite
What is the role of the sinoatrial (SA) node in the heart?
It initiates the electrical impulses that regulate the heart’s rhythm
What is the function of the alveoli in the lungs?
To exchange gases (oxygen and carbon dioxide)
Which of the following hormones is secreted by the thyroid gland?
A) Cortisol
B) Insulin
C) Thyroxine
D) Epinephrine
C Thyroxine
Which neurotransmitter is primarily involved in mood regulation and is often linked to depression?
Serotonin
How can you best describes systolic pressure?
The pressure during heart contraction
Which structure in the respiratory system connects the pharynx to the lungs?
Trachea
What is the function of insulin in the body?
To regulate blood sugar by promoting glucose uptake
What is the role of the autonomic nervous system?
Regulation of involuntary functions like heart rate and digestion
What are the components of blood plasma?
Water, proteins, and electrolytes
Which part of the brain regulates involuntary functions like breathing and heart rate?
Medulla oblongata
What is the main function of the pituitary gland?
To control the body’s growth, development, and reproduction
The blood-brain barrier prevents harmful substances from entering the brain. What is NOT a characteristic of the blood-brain barrier?
It allows large molecules like proteins to pass freely
What is the function of red blood cells (RBCs)?
To transport oxygen
Which type of blood vessel carries oxygen-rich blood away from the heart?
Arteries
What gland is known as the "master gland" because it controls the activities of other endocrine glands?
Pituitary Gland