1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Darya [45]
4 years ago
11

"During embryonic development red blood cells begin to develop in patches called blood islands. The blood cells secrete growth f

actors that diffuse only to nearby cells, signaling differentiation into endothelial cells. The endothelial cells eventually form the linings of the blood vessels." The growth factor described in the passage is involved in what type of signaling?a. Autocrine
b. Paracrine
c. Endocrine
d. Juxtacrine
Biology
1 answer:
Elanso [62]4 years ago
7 0

Answer:paracrine

Explanation:glands are specialized tissues that secrete specific chemicals substances.these substances may be enzymes,hormones or lubricating fluid.glands secretes their their products through several mechanisms.some involve the use of ducts ,while others do not.

In paracrine secretion,the secretory products reach their target cells by diffusion through the extracellular space or adjacent connective tissue.

Paracrine secretion do not use ducts.

Similar to paracrine is the endocrine ,in which the secretory products goes through the basal lamina ,into the underlying connective tissue and into the vascular syatem.they too do not use ducts

You might be interested in
PLEASE HELP !
Gala2k [10]
I believe the answer would be A, because if water didn’t exist, there would be no presence of living things on earth. Water is a resource for life, thus, presence of living things.
4 0
3 years ago
Read 2 more answers
Which of the following explains how cells become specialized to develop into parts of organ systems?
Kitty [74]

Answer:

C.Cells develop in particular areas of the body, which gives them the same functions

Explanation:

Cell differentiation is the process of cells becoming specialized as their body develops. ... Through the action of these transcription factors, cells specialize into one of hundreds of different cell types in the human body.Cell differentiation is how generic embryonic cells become specialized cells. This occurs through a process called gene expression. Gene expression is the specific combination of genes that are turned on or off (expressed or repressed), and this is what dictates how a cell functions

4 0
3 years ago
Synovial joints have these features: an articular capsule, a joint cavity containing synovial fluid, articular cartilage, ligame
Shalnov [3]

Answer:

A. True

Explanation:

A space between the two bones of the synovial joint is called the joint cavity. It allows the synovial joints to move freely. The layer of hyaline cartilage covers the bones of the synovial joints. This is called articular cartilage. It forms a slippery surface to cover the bones. Due to the presence of cartilage, the friction is reduced between bones of the joints during movement.

Synovial joints may also have accessory ligaments present outside or within the articular capsule of the joints. Nerve endings are present in the articular capsule and the related ligaments of these joints. Similarly, blood vessels enter the ligaments and articular capsule of these joints.

3 0
3 years ago
Read 2 more answers
How should the unknown microscopic organism be classified as a prokaryote or a eukaryote
ratelena [41]
The main difference between eukaryotic and prokaryotic cells is that eukaryotic cells have a nucleus. The nucleus is where cells store their DNA, which is the genetic material. The nucleus is surrounded by a membrane. Prokaryotic cells do not have a nucleus. Instead, their DNA floats around inside the cell.
5 0
3 years ago
individuals heterozygous for the sickle-cell allele gain a practical immunity against the malarial parasite. T OR F
Nana76 [90]
True because a mutation happened
6 0
3 years ago
Other questions:
  • What gets through transport proteins of the lipid bilayer easier? nonpolar or polar molecules? also, what other factors influenc
    8·1 answer
  • Explain why the presence of a pelvis is not an important adaptation to life in the ocean
    15·1 answer
  • The triad in a skeletal muscle fiber is composed of a centrally located T-tubule flanked on both sides by the terminal cisternae
    5·1 answer
  • Which diagram shows a homologous chromosome pair that has heterozygous alleles?
    9·2 answers
  • One-fourth as much 5 points Both the allele for type A blood and type B blood are dominant. The allele for type O blood is reces
    11·1 answer
  • GET THIS DONE ASAP. I DO NOT HAVE TIME.
    5·2 answers
  • When brown iodine is exposed to starch it turns dark purple. In an experiment, you placed a cornstarch solution in a small bag m
    12·1 answer
  • How many major organ systems exist in humans?<br> A. 15<br><br> B. 5<br><br> C. 11<br><br> D. 9
    6·2 answers
  • How does the design of an experiment relate to the method of difference
    6·1 answer
  • The Nymphalidae belong to the arthropod lineage. Therefore, which statement is most likely true?
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!