Digestion and Excretion
What process breaks down food?
digestion
What 2 gases are exchanged in respiration?
oxygen gas and carbon dioxide
What does the skeletal system do?
protects internal organs, provides support, stores minerals
When in a human's life do bones grow longer and stronger, and the lymphatic system matures?
childhood
What are the 2 parts of the CNS?
the brain and the spinal cord
What are organ systems?
a group of organs that work together
What is homeostasis?
steady internal conditions
How many bronchi do humans have?
2
What type of muscle is in your stomach and blood vessels?
smooth muscle
What system produces hormones?
endocrine system
What is included in the PNS?
all of the nerves outside of the brain and spinal cord
What system allows you to move?
muscular system
Where is liquid waste stored before it is excreted?
the bladder
What, other than oxygen, is circulated in the blood by the circulatory system
nutrients, waste, gases
What do we call the part of the bone that has a lot of holes in it?
spongey bone
What are human reproductive cells called?
gametes
What part of the CNS processes reflexes?
the spinal cord
What is the liquid part of your blood called?
Plasma
What part of the digestive system absorbs nutrients?
the small intestines
Do arteries carry blood towards or away from the heart?
away
What is skeletal muscle?
What happens during aging?
hair turns grey, wrinkles form, and bones become weaker
What does CNS stand for?
central nervous system
Cardiac muscle is only found in what organ?
the heart
What type of fiber can you not digest?
insoluble fiber
What do white blood cells do?
defend the body from toxins and diseases
How many bones does an adult human have?
206
What 2 hormones are made by the ovaries?
What does PNS stand for?
Peripheral nervous system
What is the correct order of these stages of development: fetus, zygote, embryo, baby
zygote, embryo, fetus, baby