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Grade 4 Unit 2: Body Systems

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  • (Male or female?): most of the reproductive organs are inside the body
    female
  • how big is the embryo at six weeks?
    about the size of a small seed
  • the circulatory system takes blood to all parts of the ________
    body
  • (T/F? correct if false): waste leaves the bopdy through the large intestine
    false: through the anus
  • (Male or female?): they travel aalong the urethra
    male
  • where does our body bend?
    at joints
  • what happens to the chest when we breath out
    it gets smaller
  • is breathing voluntary or involuntary?
    involuntary
  • (T/F? correct if false): urine is stored in the urethra
    false: urine is stored in the bladder
  • (T/F? correct if false): all out muscles and organs need urine to function
    false: they need nutrients
  • when does the fetus have all its organs?
    at 3 months
  • (T/F? correct if false): food is mixed with saliva in the mouth
    true
  • (T/F? correct if false): food goes down the small intestine into the stomach
    false: it goes down the esophagus
  • blood vessels that carry blood to the heart are called _________
    veins
  • (T/F? correct if false): urine is made in the kidneys
    true
  • (Male or female?): an egg travels down from the ovaries
    female
  • what happens to the air when we breathe in?
    it's pulled into the lungs
  • (T/F? correct if false): most nutrients pass into the blood in the small intestine
    true
  • how long is it betwen when an egg is fertilized and a baby is born?
    9 months
  • what happens to the chest when we breathe in?
    it gets bigger
  • (Male or female?): sperm are made in the testicles
    male
  • what happens to the diaphram when we breathe out?
    it relaxes, it goes up
  • are bones rigid or flexible?
    rigid
  • what controls everything: brain, or senses?
    brain
  • blood vessels carry blood around the ______
    body
  • what happens to the air when we breath out?
    it's pushed out of the lungs
  • (T/F? correct if false): food mixes with gastric juices in the small intestine
    false: in the stomach
  • where does the fertilixzed egg go?
    to the uterus
  • how many senses do we have: 4, 5, 6?
    5
  • are muscles hard or elastic?
    elastic
  • what are the different parts of our respiratory system?
    nostrils, trachea, bronchi, and lungs
  • the heart is a hollow _________
    muscle
  • (T/F? correct if false): urine is made in the kidneys
    true
  • do the ribs protect the brain, or heart and lungs?
    heart and lungs
  • what carries messages to and instructions from the brain: nerves or msucles?
    nerves
  • which arts of our body need oxygen?
    every part- all msuiclaes and organs need o2
  • what happens to the diaphram when we breathe in?
    it contracts, it goes down
  • capillaries are where the blood delivers oxygen and nutrients to the cells and picks up _____
    carbon dioxide
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