Skeletal System
This thigh bone is not only the longest and strongest bone in the human body, but it also supports most of your weight.
What is the femur?
This colored, circular muscle of the eye controls the size of the pupil and regulates the amount of light entering the retina.
What is the iris?
This muscular tube uses rhythmic contractions called peristalsis to move food from the pharynx to the stomach.
The esophagus
These are the 'building blocks' of proteins, and nine of them are considered 'essential' because the body cannot synthesize them on its own.
What are amino Acids?
This type of pathogen is not considered a living organism because it requires a host cell's machinery to replicate its genetic material.
What is virus?
These structures connect bone to bone, providing stability to joints throughout the body.
What are ligaments?
Located in the inner ear, this snail-shaped structure contains the hair cells that convert sound vibrations into neural impulses.
What is the cochlea?
These finger-like projections in the small intestine significantly increase surface area to maximize the absorption of nutrients.
What are villi?
Often called the body's primary fuel source, these organic compounds are broken down into glucose to provide energy for cellular respiration.
What are carbohyrdrates?
These macroscopic parasites, such as tapeworms and flukes, typically reside in the host's digestive tract and absorb nutrients directly through their skin.
What is helminths?
Inside the center of large bones, this soft tissue is responsible for the production of red blood cells.
What is Bone Marrow?
These specific photoreceptors in the retina are highly sensitive to light and allow for vision in dim or dark conditions, though they do not perceive color.
What are rods?
This accessory organ produces bile, which is essential for the emulsification and mechanical digestion of fats.
What is the liver?
This fat-soluble vitamin is essential for the absorption of calcium in the digestive tract and is often synthesized in the skin via sunlight.
What is Vitamin D?
In this type of disease, the body's immune system mistakenly attacks its own healthy tissues, as seen in Type 1 Diabetes or Rheumatoid Arthritis.
What is autoimmune disease?
This is the total number of bones found in a typical adult human skeleton.
What is 206?
This sensory system, which includes the utricle and saccule, provides the brain with information about motion, head orientation, and spatial orientation.
What is the vestibular system?
This enzyme, found in saliva, begins the chemical digestion of complex carbohydrates into simpler sugars while still in the mouth.
What is Amylase?
This term refers to the minimum number of calories your body needs to function while at rest, including breathing and keeping the heart beating.
What is BMR - Basal Metabolic Rate?
This mosquito-borne disease is caused by the Plasmodium parasite, which infects and eventually ruptures the host's red blood cells.
What is malaria?
Located in the middle ear, this is the smallest bone in the entire human body.
What is Stapes?
These chemical receptors, located on the tongue and soft palate, are responsible for the five basic taste sensations: sweet, sour, salty, bitter, and umami.
What is the gustatory cells?
This sphincter acts as a valve between the stomach and the small intestine, controlling the release of chyme.
The pyloric
These inorganic elements, such as iron, zinc, and magnesium, are required in small amounts for various physiological functions like oxygen transport and enzyme activation.
What are minerals?
This term describes a disease-causing agent that has the ability to overcome host defenses and cause significant damage or illness.
What is pathogen?