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
yan [13]
3 years ago
13

The first line of defense involves which structure(s)?

Biology
1 answer:
Agata [3.3K]3 years ago
5 0

Answer:

skin

Explanation:

The skin is vital for our general health and well-being. In addition to acting as the body's first line of defense against bacteria and viruses, healthy skin also maintains fluid balance and helps regulate body temperature. She is very sensitive, she recognizes the slightest touch as well as pain.

As an outer layer that we can see and touch, the epidermis protects us from toxins, bacteria, and fluid loss. It consists of 5 sublayers of keratinocyte cells. These cells, produced in the deepest inner, basal layer, migrate to the surface of the skin. As they do so, they mature and go through a series of changes.

You might be interested in
What is epinephrine and what function does it have?
jek_recluse [69]
It is a catecholamine. It is also known as adrenaline. It will increase the heart rate and other flight or fight responses.
3 0
3 years ago
Why are open circulatory systems advantageous to some animals?
goldenfox [79]

Answer:

Open circulatory systems are advantageous to some animals because they use less metabolic energy.

Explanation:

Open circulatory systems are also known as lagoon circulatory systems. In this systems the blood is not necessarily always inside the blood vessels; It leaves the heart and will directly irrigate the organs and then return by other means or mechanisms.

So that it can be understood more easily, it is necessary to think about this system acting in organisms much smaller and less complex than mammals or any other vertebrate of greater size. As this animals doesn't have a great size, they need to use less metabolic energy than more developed organisms, so this system allows them to save metabolic energy to be used in other living functions.

6 0
3 years ago
Infectious diseases have an easier time spreading now than they did several hundred years ago. What about society has changed th
d1i1m1o1n [39]

Answer:

see below :)

Explanation:

Infectious are more easily spread nowadays becuse of an increased population. The more the population increases, the bigger the advantage an infectious disease has. As of right now, because everyone is wearing masks, their immune systems are being weakened. Another reason for this is because of the increase in chemicals in our foods, which are now being transferred to our bodies. All of the medications people are taking also have an affect on the spread of disease; it gives diseases a chance to mutate.

8 0
3 years ago
Read 2 more answers
Please help i will mark brainly!
madreJ [45]
5 ........................
7 0
3 years ago
elements are made up of atoms which contain two particles in the nucleus and eletrons orbit around what
Klio2033 [76]

Answer:

An atom is composed of two regions: the nucleus, which is in the center of the atom and contains protons and neutrons, and the outer region of the atom, which holds its electrons in orbit around the nucleus.

Explanation:

4 0
3 years ago
Other questions:
  • Are black bear omnivore or carnivore?
    13·1 answer
  • How did agriculture help build civilizations?
    12·1 answer
  • What would be the expected frequency of dewlap extensions and pushups in males while in the presence of females and a predator v
    5·1 answer
  • Why is it impossible for exponential growth to continue forever?
    12·2 answers
  • Although the foxp2 amino acid sequence is highly conserved, humans have two unique amino acids that chimpanzees don't have. thes
    14·2 answers
  • If a neurotransmitter attaches to a ligand-gated channel and creates a potential that causes the inside of the excitable cell me
    7·1 answer
  • What is the definition of inherited trait
    7·2 answers
  • Name the part of the microscope.
    11·1 answer
  • Los métodos hormonales son eficientes porque: * A: impiden la entrada de los espermatozoides C: Se inhibe (no se desarrolla) la
    10·1 answer
  • If the anterior pituitary began overproducing FSH due to a tumor, and it no longer responds to normal feedback mechanisms; what
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!