Human Body Systems

Pancreas

________: Produces the enzymes needed to break down fats, proteins, and carbohydrates in the small intestine, and also produces the hormones insulin and glucagon, which are important for controlling blood sugar levels.

Neurons

________ are highly adaptable and can change their structure and function in response to new information or experiences.

pharynx

The ________ is the tube that connects the nose and mouth to the larynx and trachea.

digestive system

The ________ is a complex network of organs and glands that processes food.

trachea

The ________ is the tube that carries air from the larynx to the lungs.

muscular system

The ________ is composed of specialized cells called muscle fibers.

bronchioles

The ________ are smaller tubes that carry air from the bronchi to the alveoli.

PNS

The ________ includes all of the nerves that branch out from the CNS and connect it to the rest of the body.

movement of internal organs

They are responsible for maintaining and changing posture, locomotion, as well as the ________, such as the heart.

Neurotransmitters

________ play a key role in regulating mood, behavior, and cognition.

stomach

The ________ produces acid and enzymes that break down proteins in the food.

Hormones

________ help to regulate many of the bodys functions, including growth, metabolism, and reproduction.

alveoli

The ________ are tiny sacs in the lungs where oxygen and carbon dioxide are exchanged between the body and the atmosphere.

larynx

The ________ is the organ that produces sound and is also known as the voice box.

bronchi

The ________ are the large tubes that carry air from the trachea, or windpipe, to the lungs.

CNS

The ________ consists of the brain and spinal cord.

nose

The ________ is the organ that takes in air and warms, moistens, and filters it before it enters the lungs.

Gallbladder

________: Stores and concentrates the bile produced by the liver and releases it into the small intestine.

large intestine

The ________ absorbs water, vitamins, and minerals from the food and forms waste products, which are passed out of the body as feces.

digestive process

The ________ starts when food is put into the mouth and chewed.

Muscles

________ are further divided into four distinct categories: slow twitch, fast twitch, intermediate, and mixed.

Intermediate fibers

________ are a combination of the two and are used for activities that require a combination of speed and endurance.

Smooth muscle

________ is found in the walls of organs such as the stomach and intestines and is responsible for involuntary movements such as digestion and urination.

Cardiac muscle

________ is found in the walls of the heart and is responsible for pumping blood throughout the body.

Fast twitch fibers

________ are used for explosive activities and have high tension and short duration.

muscular system

The ________ is essential for movement and maintaining posture.

Neurons

________ are the cells that make up the nervous system.

digestive system

The ________ also includes several accessory organs that help with digestion.

Muscles

________ also work in pairs, with one ________ contracting while the other relaxes, allowing for smooth, coordinated movements.

Muscles

________ are made up of three types of muscle fibers: skeletal, cardiac, and smooth.

Liver

Responsible for filtering toxins from the blood, producing bile to aid digestion, and regulating fat metabolism

Gallbladder

Stores and concentrates the bile produced by the liver and releases it into the small intestine

Pancreas

Produces the enzymes needed to break down fats, proteins, and carbohydrates in the small intestine, and also produces the hormones insulin and glucagon, which are important for controlling blood sugar levels