The heart is a ________ organ, meaning it has an empty space inside where blood flows.
A
hollow
B
lean
C
contagious
Explanation
The heart is described as a hollow organ because it contains chambers (empty spaces) that allow blood to be pumped through it.
During a heart attack, the heart muscles may ________ and stop pumping effectively.
Explanation
To 'contract' means to tighten or shorten; in the context of the heart, muscles must contract to pump blood, and heart attacks disrupt this process.
The heart has four ________ that work together to pump blood throughout the body.
A
strips
B
chambers
C
strains
Explanation
The human heart is divided into four sections known as chambers: the right and left atria, and the right and left ventricles.
Regular exercise strengthens the ________, making them more efficient at pumping blood.
A
cardiac muscles
B
hybrid viruses
C
outbreaks
Explanation
Cardiac muscle is the specific type of muscle tissue found in the heart that is strengthened through aerobic exercise.
If you feel tired, you should ________ against the wall until the dizziness passes.
Explanation
To 'lean' means to rest your body against a surface for support.
Before eating an orange, it is important to ________ the skin first.
Explanation
To 'peel' means to remove the outer covering or skin from a fruit or vegetable.
The heart works as a ________ that pushes blood to all parts of the body.
A
chamber
B
pump
C
strain
Explanation
The primary function of the heart is to act as a biological pump for the circulatory system.
Doctors had to ________ away the damaged tissue to save the patient's life.
A
vary
B
strip
C
contract
Explanation
In a medical context, 'strip away' means to remove layers of tissue, often during surgery.
Symptoms of a heart attack can ________ from person to person, making diagnosis difficult.
Explanation
'Vary' means to differ or be unlike; symptoms of medical conditions often show differences across different individuals.
She took a long ________ of bandage to wrap around her injured wrist.
Explanation
A 'strip' refers to a long, narrow piece of material such as a bandage or cloth.
After hours of honest conversation, they finally had a ________ and resolved their differences.
A
change of heart
B
heart-to-heart talk
C
take it to heart
Explanation
A 'heart-to-heart' talk is an idiom for a candid, intimate, and sincere conversation between two people.
He wanted to become a doctor, so he decided to ________ and ignore his family's doubts.
A
have a change of heart
B
follow his heart
C
have his heart set on
Explanation
To 'follow your heart' means to do what you feel is right or what you most want to do, despite external pressure.
She really ________ becoming a professional pianist, so she practices every single day.
A
has her heart set on
B
takes things to heart
C
follows her heart
Explanation
The idiom 'to have your heart set on something' means to be very determined to achieve or get a specific thing.
I used to hate vegetables, but after trying them cooked differently, I had a complete ________.
A
heart-to-heart talk
B
follow your heart
C
change of heart
Explanation
A 'change of heart' refers to a change in one's opinion or feelings about something.
Don't ________ everything your boss says; sometimes he is just in a bad mood.
A
take it to heart
B
have a change of heart
C
have a heart-to-heart talk
Explanation
To 'take something to heart' means to be deeply affected or upset by criticism or a remark.
The flu is highly ________, so people should stay home when they are sick.
A
contagious
B
hollow
C
unprecedented
Explanation
A disease is 'contagious' if it can be spread from one person to another by direct or indirect contact.
The ________ of Ebola in West Africa killed thousands of people before it was controlled.
A
mutation
B
outbreak
C
vaccination
Explanation
An 'outbreak' is a sudden increase in the occurrence of a disease in a particular time and place.
Elderly people are more ________ to the flu because their immune systems are weaker.
A
susceptible
B
contagious
C
unprecedented
Explanation
'Susceptible' means to be likely or liable to be influenced or harmed by a particular thing, such as an illness.
Scientists have developed a new ________ that protects against multiple strains of the flu.
A
virus
B
vaccination
C
mutation
Explanation
A 'vaccination' is a treatment that helps the body's immune system recognize and fight specific diseases.
A new ________ of COVID-19 appeared that was more easily transmitted than earlier versions.
A
strain
B
chamber
C
pump
Explanation
In biology, a 'strain' is a genetic variant, subtype, or culture within a biological species.
The speed of vaccine development during the pandemic was ________ in medical history.
A
contagious
B
susceptible
C
unprecedented
Explanation
'Unprecedented' means never done or known before; the rapid development of the COVID-19 vaccine was a first in history.
Mosquitoes can ________ diseases like malaria and dengue fever from person to person.
A
transmit
B
contract
C
vary
Explanation
To 'transmit' means to pass or spread (something, such as a disease) from one person or place to another.
A genetic ________ in the virus allowed it to infect humans for the first time.
A
chamber
B
mutation
C
pump
Explanation
A 'mutation' is a change in the DNA or RNA sequence of an organism, such as a virus.
The ________ virus combined genetic material from bird flu and human flu strains.
A
hybrid
B
hollow
C
contagious
Explanation
'Hybrid' refers to something that is made by combining two different elements; in this case, genetic material from two different flu strains.
The ________ itself is very small and can only be seen under an electron microscope.
A
chamber
B
strip
C
virus
Explanation
A virus is a microscopic infectious agent that can only be seen with powerful tools like electron microscopes.
Which doctor specializes in treating children from birth to adolescence?
A
geriatrician
B
pediatrician
C
neurologist
Explanation
A pediatrician is a medical doctor who specializes in the care of infants, children, and adolescents.
If you have severe anxiety or depression, which professional should you see?
A
orthodontist
B
pharmacist
C
psychiatrist
Explanation
A psychiatrist is a medical doctor who specializes in mental health, including substance use disorders.
Who prepares and dispenses medications prescribed by doctors?
A
therapist
B
anesthesiologist
C
pharmacist
Explanation
A pharmacist is a healthcare professional who specializes in the right way to use, store, provide, and dispense medicine.
Which doctor specializes in eye diseases and surgery?
A
ophthalmologist
B
optician
C
orthodontist
Explanation
An ophthalmologist is a medical or osteopathic doctor who specializes in eye and vision care, including surgery.
If you need braces to straighten your teeth, you should visit an:
A
orthodontist
B
dentist
C
osteopath
Explanation
An orthodontist is a dental specialist who corrects irregularities of the teeth (such as alignment) and jaws.
