Answer - They Secrete Enzymes and Break Down Food

Reasoning - With the added enzymes or saliva it can help lubricate your esophagus make the good down to your stomach into a digestive zone.

4 0

3 years ago

Observe and measure prepared sea urchin embryos and chick embryos.Conduct an experiment using chick embryos. Determine the effec

Igoryamba

Answer:

Increase with a stimulant and decrease with a depressant

Explanation:

Stimulants and depressants are observed using various organisms. The way a stimulant works is by increasing the dopamine levels in the body. This in turn causes increased heart rate as would be seen in the chick embryo heart. On the other hand a depressant would lower dopamine levels. This would reduce the neurotransmitter and cause the heart rate to slow down.

7 0

2 years ago