Most types of communication between cells utilize -chemical or electric signals.
Communication is done by the release of chemical signals by the cell thus sending the message. These chemical signals are usually proteins or other molecules that are produced by the sending cell. These signals are released into the extracellular space.
The Critical thinking the nurse used is Creativity in
practice. <span>When client has difficulty lowering and raising
herself in a chair because of pain and limited range of motion in her knees.
The nurse uses wooden blocks to elevate the chair legs so that the client is
able to sit and stand with little discomfort while making sure the chair is
safe to use.</span>
Answer: Annelida
Leeches are soft bodied segmented parasitic worms. They belong to the phylum Annelida. They are hermaphrodites which means they exhibit sex organs of both male and female.
The characteristics which are found in leeches which group them into Annelida are:
1. The body of the leeches are bilaterally symmetrical like other Annelids. The body organs are also segmented.
2. They have a closed circulatory system in which the heart pumps the blood to all the parts of the body.
3. Leeches either exhibit a protusible pharynx or proboscis which allows them to suck the blood of the host such features are also common in other Annelids.
The <span>principal ways in which a load may be applied to a specimen are:
1. Tension
2. Compression
3. Shear
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The force
that pulls material apart is tension and the one that squashes
material together is compression and shear is the action of the force in
trying to cut through the material.
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