Digestive System
Digestion is the mechanical and ______________ breakdown of food into smaller particles and molecules.
chemical
The excretory system is responsible for the removal of ___________ from the body as well as the regulation of ___________ retention.
waste, fluid
The fluid that passes through the lymphatic system is called ________________.
lymph
The immune system helps the body fight off _________________.
pathogens
The endocrine system is a system of glands, organs and tissues that release ____________ messages into the bloodstream.
chemical
Digestive _________________ are protein molecules that help to breakdown food in the body.
enzymes
The organ(s) that filter(s) waste from the blood is the ______________.
kidneys
The small clusters of spongy structures that filter the lymph are called ________________ ___________.
lymph nodes
The human body's response to an injury or infection is called the ___________________________ response.
inflammatory
A __________________ is a chemical "messenger" that is released from a gland to travel to another part of the body, via the bloodstream.
hormone
The ________________ is the organ that churns food as acid is mixed with it to break it down.
stomach
The networks of capillaries and tubules in the kidneys where the blood is filtered are called ______________.
nephrons
T cells develop in the ________________.
thymus
Any substance that causes an immune response is called a(n) __________________.
antigen
The ________________________ gland secretes growth hormones to enable the body to grow normally.
pituitary
The _______________ _______________ is where nutrients from food is sent out to the rest of the body through the blood vessels of the _________.
small intestine, villi
The tubes that carry urine out of the kidneys are called _______________.
ureters
B cells are developed in the
bone marrow
The proteins that counteract the antigens in the body are called ___________________.
antibodies
The _____________________ controls the pituitary gland as it receives messages from the nervous system.
hypothalamus
The large intestine is also referred to as the ______________.
colon
The place urine is stored in the human body before it's secreted is called the __________________.
bladder
The old red blood cells are recycled and lymphocytes are produced and stored in the ________________.
spleen
An hypersensitive immune response to an antigen is called a(n) ________________.
allergy
The ________________ gland controls our responses to stress via the release of hormones.
adrenal