Answer:
The correct answer is -The brain and the spinal cord respond and sends a signal down a motor neuron to a specific sensory stimulus.
Explanation:
Sensory receptors sense the changes that take place in the environment that is called stimuli by sensory neurons that transmit the signal from the sensory receptors to the brain.
The brain and the spinal cord make the central nervous system. This coordinates a response to a specific stimulus and sends a signal down a motor neuron and send a signal to the effector by motor neurons.
Answer:
A. <em>provide</em><em> </em><em>structure</em><em> </em><em>and </em><em>protection</em><em> </em>
<em>hope</em><em> it</em><em> helps</em>
Protein elastin is used to made elastic fiber, component of connective tissue that found abundant in blood vessels, bones, tendon and skin. The effect should be prominent in those organs.
Aorta is the biggest artery blood vessels and it need more elasticity to withstand the pressure of the ventricle. Less elasticity makes aorta become enlarged. The bone will lose density and become thinner. The tendon in heart valve will be weaken and might cause the heart valve disease. The skin will lose elasticity, so it will be easier to stretch.
Cell,tissue,organ,and organ systems
The relationship of blood flow (Q), resistance (R), and pressure (P) in a vessel can be expressed by which equation?
A. Q = P/R.
B. Q = R/P.
C. Q = PQ.
D. P = Q/ R
Answer:
A. Q = P/R.
Explanation:
Resistance is the force that counteracts the blood flow and slows down the speed of the blood flow. It occurs due to friction between blood and the walls of blood vessels. Resistance is regulated by the size of the blood vessels, length of the blood vessels and viscosity. Blood always flows from the region of the higher blood pressure towards the lower one. Therefore, blood flow is directly proportional to pressure and is indirectly proportional to the resistance.
So, Q= P/R