Neuroeffector junctions are varicosities where motor neurons release neurotransmitters to non-neuronal target cells. These junctions can be observed along the axon.
- The motor nerve varicosities RELEASE neurotransmitters onto smooth muscle cells.
- There are many varicosities along the axons of the neurons that feed smooth muscle cells.
- When autonomic neurons are stimulated, varicosities release neurotransmitters along their axons.
- These neurotransmitters then diffuse through the interstitial fluid to interact with receptors in the smooth muscle cells.
Learn more in:
brainly.com/question/1462286?referrer=searchResults
1. Metamerism is a phenomenon that appears in some animals and it refers to linear disposition of their body segments that are similar in structures. These body segments are called metamers or somites and they include only the ectoderm and mesoderm (not endoderm). Metamers repeat serial and they have role in advanced locomotion. Metamerism might be homonymous when its strict or heteronymous when units are grouped together to perform similar functions.
2. Earthworm is an example of homonymous metamerism, meaning that its segments are strict. The subtype of homonymous metamerism in which Earthworm belongs is called true metamerism because in each its segment there is a repetition of organs and muscles. On the other hand, Arthropods are example of heteronymous metamerism when units are grouped together to perform similar functions. So, they have for example, head (5 metameres), thorax (3 metameres), and abdomen (11 metameres).
3. Similarities between Earthworm and Arthropods’ metamerism are:
• Metamers are similar in structure
• Each metamer has its function
• Involved in locomotion
Differences is that metamers in Earthworm all work together for the whole organism while in Arthropods they are functionally separated in groups with different functions.
Answer:
The seed symbolizes happiness and innocence..... it reminds her of better days when Melinda's family was happy.
Explanation:
The symbolism behind Melinda finding the growing seed inside the apple during biology class shows what her family previously had: love and time for one and another.
It could also symbolize achievements at something David has not or give her memory when love was still blooming in her family.
Answer:
I can't identify the phenotypes since I don't know what trait B represents, what trait C represents and what trait c represents.
But you can find the phenotypic ratio by finding the number of individuals with each phenotype. The yellow squares are individuals that all have the same phenotype as each other. And the blue squares have the same phenotype as each other, but a different phenotype from the yellow squares.
The ratio would be written as:
(number of yellow squres):(number of blue squares)
12:4