Nervous
What is the central nervous system made up of?
Brain and Spinal Corde
In a diagram of the eye, this 'white of the eye' is the tough, fibrous outermost layer that protects the inner structures.
Sclera
Often called the 'master gland,' this small structure at the base of the brain produces hormones that control many other endocrine glands.
Pituitary gland
This massive vessel is the largest artery in the body and carries oxygenated blood from the left ventricle to the rest of the body.
Aorta
Once interstitial fluid enters the lymphatic vessels, it is called by this name.
Lymph
Looking at a diagram of a neuron, these branch-like structures are responsible for receiving signals from other cells
Dendrites
This colored, ring-shaped portion of the eye contains muscles that adjust the size of the pupil to control light entry.
Iris
In a diagram of the neck, this butterfly-shaped gland is responsible for regulating the body's metabolic rate.
Thyroid
On a diagram of the heart, these two superior chambers are responsible for receiving blood as it returns to the heart.
Atria
On a diagram, these small, bean-shaped structures are scattered along lymphatic vessels and act as filters for harmful substances.
Lymph Nodes
This long, tail-like part of the neuron, often covered in a fatty layer, carries electrical impulses away from the cell body.
Axon
Which structure in the inner ear is shaped like a snail shell and contains the receptors for hearing?
Cochlea
These glands, located on top of each kidney, produce adrenaline (epinephrine) in response to stress.
Which blood vessels have the thinnest walls to allow for the exchange of gases, nutrients, and wastes between blood and tissues?
Capillaries
This is the largest lymphatic organ, located on the left side of the abdominal cavity, and it filters blood rather than lymph.
Spleen
In a diagram of the brain, this largest part is divided into two hemispheres and handles higher-level functions like thought and action.
Cerebrum
When labeling the ear, these three tiny bones—the malleus, incus, and stapes—are collectively known as what?
Ossicles
If a person has high blood calcium levels, the thyroid gland releases this hormone to help deposit calcium into the bones.
PTH
In the pathway of blood flow, which valve prevents blood from flowing backward from the right ventricle into the right atrium?
Tricuspid Valve
Lymphatic vessels are most similar in structure to which cardiovascular vessel because they both contain valves to prevent backflow?
Veins
This gap between two neurons is where neurotransmitters are released to pass a signal along.
Synapse
In the sense of smell, these specialized neurons are located in the roof of the nasal cavity and detect airborne chemicals.
Olfactory receptors
Which hormone is released by the pancreas to increase blood sugar levels when they drop too low?
Glucagon
Which chamber of the heart has the thickest muscular wall because it must pump blood with enough force to reach the entire body?
Left Ventricle
This large duct drains lymph from the entire left side of the body and the lower right side, returning it to the venous system.
Thoracic Duct