Biology Forums - Study Force

1. Motion sickness is the result of unusual stimulation of receptors in the
a) cerebrum
b) cochlea
c) Organ of Corti
d) semi circular canals

2. Which statement concerning visual problems is false?
a) The lens become less flexible with age causing a loss of ability to focus on near objects
b) In farsightedness, the image focuses behind the retina
c) Night blindness is caused by chemical deficiencies in the cones
d) Astigmatism is caused by uneven curvature of the cornea and lens

3. Most conscious experiences of the external environment are initiated by impulses from
a) autonomic sympathetic nerves
b) interneurons
c) motor effectors
d) sensory receptors

4. Graph is attached (1rst pic attached) ---> What likely occurred during the time interval 2 ms and 3 ms?
a) A refractory period
b) an inflow of sodium ions
c) The reception of a second stimulus
d) The active transport of sodium ions into the neuron

5.Should a person lose the ability to interpret visual images, one might suspect damage to the
a) medulla oblongata
b) cerebellum
c) cerebrum
d) hypothalamus

6. People see little if they enter a dimly-lit room after being outside on a sunny day. In a short while, shapes and objects become easier to see in dim light. This time lapse is necessary for the
a) lenses to accommodate
b) pupils to get smaller
c) rods to begin to function
d) cones to begin to function

7. Which sequence lists in correct order the components of a simple reflex arc from "stimulus" to "response"
a) Receptor, sensory neuron, central nervous system. motor neuron, effector
b) Receptor, effector, central nervous system, sensory neuron, motor neuron
c) Effector, sensory neuron, central nervous system, motor neuron, receptor
d) Receptor, motor neuron, central nervous system, sensory neuron, effector

8. 2nd attached pic asks for----> Physical co-ordination and higher mental activities such as speech and hearing are controlled by the structures labelled
a) X and Y
b) Y and W
c) W and X
d) Z and X

9. 3rd pic asks for---> The order in which neurons depolarize in this reflex arc is
a) III, II, and I
b) I, II, and III
c) II, I and III
d) I, III and II


THANK YOU AND PLEASE HELP

(D)


(D)

Here are two to get you started. Have you guessed on any of them yet?

Please limit to two questions per thread :D

These were the only questions that I needed help on just need help on the rest

Do you have the other answers?

B

thanks