less littering or more cleanup <em>let me know if this helpful please</em>
Answer:
Blood vessels constrict
Explanation:
On seeing danger, impulses are sent to the adrenal medulla. It responds by secreting adrenaline into the bloodstream. This results in the following:
- Increased heartbeat
- Diversion of blood from alimentary canal and skin to skeletal muscles.
- Increased breathing rate and depth
- The liver releases more glucose.
These changes increase energy production especially in the skeletal muscles and prepare animal for sudden fight or flight.
The commonality is the presence of Hox genes. Hox genes are a group of genes that control basic body plan formation. They are responsible for the location of body parts and this explains why many organisms or animals share similar body types. For example these genes help lay out the basic body forms in many animals, including humans, flies, and worms. Additionally, they set up the head-to-tail organization.
