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Natural Science Review Units 1-4
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Which is the odd one out? touch, pressure, taste, pain, temperature
taste because the others refer to the senses of touch and the skin
What is the function of the olfactory bulb?
contains receptor cells that detect light
What are the parts of the ear?
ear canal, ear drum, ossicles, semicircular canals, cochlea, hearing receptor cells
What are the parts of the eye?
pupil, iris, lens, retina, optic nerve
What is the difference between a receptor and an effector?
Receptors detect stimuli and send signals to the nervous system. Effectors respond to orders generated by the nervous system.
what are the 6 parts of the digestive tract?
mouth, pharynx, oesophagus, stomach, intestines anus
explain the journey of an unfertilized ovum
ovum starts in the ovaries, travels down fallopian tubes to the uterus and if it is not fertilized it leaves the body via the vagina during mensturation
What are three secondary sex characteristics of boys during puberty?
hair grows under the arms and in the pubic area, voice gets deeper, muscles grow larger
What are the female reproductive organs?
ovaries, fallopian tubes, uterus, vagina, vulva
What are the male reproductive organs?
testes, penis, accesory glands and vas deferens
What are the male and female gametes called in human reproduction?
spermatozoa and ova
what is the function of platelets?
join together and seal up cuts so that we don´t lose blood
The heart, blood vessels and blood make up the ___________ system.
circulatory
What is this? Diaphragm contracts, lungs expand, air enters the mouth and the nasal cavity, travels through the respiratory tract until it reaches alveoli
inhalation
The bronch enter into the lungs. They branch off into smaller and smaller ______. These end in microscopic air sacs in the lungs called the _____
bronchioles, alveoli
The ___ glands, the ____ and the ____ are the digestive system´s accesory glands
salivary, liver, pancreas
Give 3 examples of energy giving foods, body building foods and protective and regulatory foods
fats, butter, potatoes, cereals/ fish, meat, eggs, legumes/ oranges, pears, apples, spinach
What are the main nutrients?
carbohydrates, fats, proteins, vitamins, minerals and water
What is the purpose of the excretory system?
use blood to transport substances such as nutrients and waste products around the body
Which systems are used in interaction?
Nervous and locomotor systems
What systems are used in nutrition?
Digestive, respiratory and circulatory systems
What is the function of nutrition?
Obtain nutrients like carbs, fats, minerals, proteins, vitamins and water
What are the three vital functions of human beings?
Nutrition, Interaction, Reproduction
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