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
Novosadov [1.4K]
3 years ago
15

Why do blood vessels and lymph vessels have valves?

Biology
1 answer:
OLEGan [10]3 years ago
3 0
Lymph vessels have one-way valves in order to prevent the back flow of lymphatic fluid. Blood vessels have valves in order to keep the blood flowing in one direction.
You might be interested in
Which type of skin glands are most affected by the hormonal changes that occur during puberty?
Anna [14]

Apocrine sweat glands  are most affected by the hormonal changes that occur during puberty.

What is puberty ?

Between childhood and adulthood, puberty is a time of rapid growth, the emergence of secondary sexual traits, the attainment of fertility, and significant psychological changes. Although the order in which pubertal changes occur is fairly predictable, their exact time varies greatly.

At puberty, sex hormones stimulate the apocrine sweat glands, which then begin to work. In the groin and axilla, they are linked to hair follicles. The thick, protein-rich substance has no smell at first but may acquire one after coming into contact with germs.

To learn more about  pubertal changes click on the link below:

brainly.com/question/15328076

#SPJ4

8 0
1 year ago
Which of the following structures is the most complex in organization? (biggest, most
alisha [4.7K]
Organ system is the most complex in organization
6 0
3 years ago
Read 2 more answers
Which property would be classified as expendable?
Andrej [43]
Expendable properties are those properties that are consume in use or that lose their identity in use. It also include those properties that become an integral part of other property when put to use and those properties which have an expected service life of less than one year. One example of expendable properties is materials and supplies given to an army unit.
4 0
3 years ago
True or False - Just like mitosis, meiosis involves one division of the nucleus and cytoplasm
mars1129 [50]

Answer:

TRUE!!!!

Explanation:

BRAINLY PLEASE AND THANK YOU!!! HOPE THIS HELPS :)))))

XD

6 0
3 years ago
Read 2 more answers
Blue green algae multicellular or unicellular​
Ainat [17]

Answer:

Explanation:

Unicellular or multicellular, most cyanobacteria are a characteristic blue green, but can also be green, brown, yellow, black, or red.

4 0
3 years ago
Other questions:
  • Gomphoses are among the most common joints in the body. <br> a. True <br> b. False
    6·1 answer
  • Which of the following genera is an anaerobic gram-negative rod? A) Escherichia B) Staphylococcus C) Bacteroides D) Treponema E)
    9·2 answers
  • What holds atoms together in a molecule
    6·1 answer
  • E. coli is a species of bacteria. What advantage does E. coli have over sexually reproducing organisms?
    10·2 answers
  • What would most likely happen to a person who is not getting enough essential amino acids in his or her diet?
    13·1 answer
  • Which of the following describes a relationship of predator-prey A. Oxpecker birds eat parasitic ticks off the backs of zebras B
    6·2 answers
  • Which kingdom is completely off unicellular organisms that are prokaryotic
    12·1 answer
  • A roan coloration is the product of crossing a red bull and a white cow.
    11·1 answer
  • In the reaction shown below, what does the symbol "C" represent?
    6·1 answer
  • Which process is responsible for the movement of continental drift?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!