HELPP M 8.) The nervous system is:

A. a system for supporting the body’s structure.

B. a system for circulating blood throughout the body.

C. a network that carries messages between the brain and the rest of the body.

D. a network of glands that secrete hormones.



9.) From the choices below, select the activities for which the nervous system is responsible.

A. digesting food to produce energy

B. quickly moving your hand off of a hot stove

C. feeling pain

D. identifying an odor



10.) Glial cells are

A. cells that support neurons.
B. cells that produce sweat.
C. cells that transmit messages.

D. cells that sometimes attack the nervous system.



11.) What are the characteristics of the central nervous system? Select all that apply.

A. It is made up of the brain and spinal cord.

B. It is a system of bones that supports the body.

C. It uses the spinal cord as a pathway to transmit messages to the PNS.

D. It contains networks of nerves called plexuses.

C

Explanation:

Tthe nervous system is a highly complex part of an animal that coordinates its actions and sensory information by transmitting signals to and from different parts of its body.

answer and explanation;

volcanic rocks are igneous rocks which form from lava, molten rock which has been thrust out of a volcano onto the surface of a rocky body such as an asteroid, planet, or dwarf planet.  

plutonic rocks are igneous rocks which form from subterranean chambers of molten rock or magma. plutonic rocks make up the base of continental crust as well as oceanic crust. their slow rate of formation causes them to be coarse grained since there is plenty of time for large crystals to form before the magma solidifies into rock.

the textural difference is that plutonic rocks are more coarse grained than volcanic rocks. plutonic rocks are coarse grained while volcanic are fine grained ; glassey or fragmental. since fine and coarse are adjectives the decision as to whether a rock is fine or coarse grained is generally made on the bases of whether or not the individual crystals can be seen in most if the rock.