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
ollegr [7]
3 years ago
6

In what ways are autorhythmic fibers similar to and different from contractile fibers?

Biology
1 answer:
Leto [7]3 years ago
5 0
I think Autorhythmic fibers are fibers that are self excitable or on their own for example some cardiac muscle. They  repeatedly generate action potentials that trigger heart contractions.They continue to stimulate a heart to beat even when it is removed from the body. In comparison to contractile fibers, autorhythmic fibers are self excitable and do not require nervous system stimulation to trigger contractions. Contractile fibers have stable resting membrane potentials of -90mV, when a contractile fibers reaches threshold by action potential, the voltage gated fast sodium ions channels will open. 
You might be interested in
A DNA strand with the sequence A-T-T-G-C-T would be complementary to which of the following? *
STatiana [176]

UAACGA

just so you know T=A/G=C/A=U

8 0
3 years ago
A cell with 80 chromosomes undergoes meiosis. How many chromosomes are found in the daughter cells? How many daughter cells are
qwelly [4]

Answer:

Four daughter cells are produced each with 40 chromosomes. The daughter cells would exhibit genetic variations and would not be genetically identical to each other.

Explanation:

Meiosis is a cell division that forms four daughter cells from one parent cell as two sequential division meiosis I and meiosis II do not include any DNA replication between them. Crossing over during prophase-I of meiosis-I includes the exchange of genetic segments and occurs between the homologous chromosomes. It produces new gene combinations in the daughter cells which were otherwise not present in the parent cell.

Since there is no DNA replication between meiosis I and meiosis II, the daughter cells have half the number of the chromosomes compared to the parent cell. This occurs as homologous chromosomes move towards the opposite pole during anaphase I.

Therefore, a parent cell with 80 chromosomes will make a total of 4 daughter cells by meiosis. Each daughter cell would have 40 chromosomes. These daughter cells would have some new gene combinations and would be genetically dissimilar among themselves.  

5 0
3 years ago
Which constellation is connected with lines in the picture?
denis23 [38]
Where’s the picture
3 0
3 years ago
Read 2 more answers
1 point
Arada [10]

Answer:

breath in

Explanation:

odkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkk

3 0
3 years ago
Which molecule provides most of the energy used to drive chemical reactions in cells? ASAP
bonufazy [111]

Answer:

El trifosfato de adenosina, o ATP, es una molécula pequeña relativamente simple. Esta puede ser considerada como la principal moneda energética de las células, así como el dinero es la principal moneda económica de las sociedades humanas.

Explanation:

5 0
3 years ago
Other questions:
  • A person's body temperature begins to increase when in the direct sun. they start to sweat to decrease their raised body tempera
    7·1 answer
  • 5. How does the location of the nodules relate to the function of the nodule? Explain.
    5·1 answer
  • Which best statement best describes what a thylakoid does during photosynthesis
    5·2 answers
  • Which is usually colder, A deep current or a surface current.....PLEASE HELP
    8·2 answers
  • Which mineral is commonly found in the three metamorphic rocks slate, schist and gneiss
    15·1 answer
  • What are mutations?
    12·1 answer
  • 1: Which two parts of the taxa do we use to name organisms?
    11·1 answer
  • What is the appearance of a characteristic called
    15·1 answer
  • According to the United States Fish and Wildlife Service, nearly 260,000 acres of forest are destroyed by wildfires every year.
    9·1 answer
  • Help with question 48
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!