Body Systems I
It is the largest bone in the human body, located in the upper leg.
What is the femur?
This organ is where the vast majority of nutrient absorption takes place in the digestive system.
What is the small intestine?
This is the general term for substances that carry messages and instructions directly to your cells.
The total number of legs that arachnids have.
What is 8?
This is the primary biological purpose of hair on mammals.
What is temperature regulation?
This organ controls your breathing by contracting and relaxing.
What is the diaphragm?
This part of the nervous system is the central hub that controls your thoughts, memories, and emotions.
What is the brain?
These specific immune cells protect the body by directly engulfing and killing invading pathogens.
What are macrophages and neutrophils?
This 4-legged animal classification group includes species that lay eggs with little to no embryonic development inside the mother.
What are birds (or Oviparous Terapods)?
To prevent their teeth from growing completely out of control, these animals must constantly gnaw on things.
What are rodents?
These upper chambers of the heart are responsible for receiving incoming blood.
What are the Atria(Atrium)?
These are the three main organs that make up the human excretory system.
What are the lungs, kidneys and skin?
This area of the brain acts as a bridge, coordinating many activities between both the nervous and endocrine systems.
What is the hypothalamus?
While its name might trick you into thinking it's an amphibian, a horned toad actually belongs to this animal class.
What are reptiles?
These specific types of bird feathers are responsible for providing aerodynamic shape, waterproofing, and UV protection.
What are contour feathers?
This tissue, found deep inside your bones, is responsible for producing red and white blood cells.
What is the bone marrow?
Also known as the colon, this organ removes water and electrolytes from indigestible food matter to form solid stool.
What is the large intestine (or colon)?
These specific immune system components move mucus toward the stomach to kill off pathogens.
What are mucous membranes?
All arthropods share these five distinct anatomical characteristics.
What are an exoskeleton, jointed appendages, segmented bodies, an open circulatory system and bilateral symmetry?
This term describes an organism that cannot generate its own body heat and must get it from the surrounding world.
What is Ectothermic?
These are the four main components that make up human blood.
What are plasma, red blood cells, white blood cells and platelets?
The peripheral nervous system includes all of teh nerves that branch out from these two major structures.
What are the brain and spinal cord?
Unlike other hormones, steroid and thyroid hormones affect their target cells by doing this.
What is entering the cell to make changes?
This type of circulatory system occurs when blood washes directly over internal organs instead of being contained in closed vessels.
What is an open circulatory system?
Scientists believe zebras evolved their distinct stripes for this specific, practical reason.
What is to repel biting flies?