Sick Days
What are 4 forms of nonspecific defense that your body uses to fight pathogens?
skin, mucous membranes, inflammation, and fever
What are the three main parts of a neuron.
cell body, dendrites, axons
An upside down image is focused on the retina by what structure of the eye?
the lens
What are the three parts of the outer ear and what do they do?
ear flap: collects sound waves
ear canal: brings sound waves to the eardrum
eardrum: thin membrane between outer ear and middle ear that vibrates when hit by sound waves
Give two examples of pathogens.
viruses and bacteria
What type of white blood cell is involved in inflammation?
a macrophage
What is a term for the gap between the axon of one neuron and the dendrites of another?
synapse
What are the two types of sensory neurons in the human eye and what does each detect?
rods: stimulated by visible light regardless of color
cones: stimulated by various colors of light
What are the parts of the skeletal system in the middle ear?
the hammer, the anvil and the stirrup
What part of the central nervous system is included in a reflex arc?
spinal cord
What are the two types of lymphocytes and which one makes antibodies?
T-cells & B-cells
B-cells make antibodies
What are the two organs of the central nervous system and their main jobs?
brain: control center
spinal cord: relay impulses between the brain and the rest of the body
What is the clear portion of the outer layer of the eye that lets light pass into the eye?
the cornea
the cochlea
What two senses help us enjoy the flavor of food?
taste and smell
How can the body build ...
a. active immunity
b. passive immunity
a. by producing antibodies through having he disease or having a vaccination
b. by receiving antibodies from an outside source
Name the portion of the brain that helps with
a. motor control
b. conscious thinking
c. processes like breathing, heartbeat, sneezing
a. cerebellum
b. cerebrum
c. brain stem
What is the relationship between the iris and the pupil?
The pupil is an opening in the iris and the size of the pupil opening is controlled by the muscles in the iris.
What part of the ear contains fluid and is critical for maintaining balance?
the semicircular canals
8th
(You can speak this answer.)
1. Blood vessels increase the supply of blood to the area.
2. Capillaries release more plasma to the affected site
3.Macrophages are released to attack and kill foreign organisms
What is the pathway of a reflex arc?
stimulus, sensory neuron, spinal cord, motor neuron, response
Fill in the blanks:
Nerve impulses are sent from the receptors in the ________ to the brain via the _________.
retina, optic nerve
Put these parts in order according to when sound waves enter the ear canal.
anvil, eardrum, cochlea, stirrup, hammer
eardrum, hammer, anvil, stirrup, cochlea
cornea, pupil, lens, retina, optic nerve