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
lidiya [134]
3 years ago
9

Which type of nerve injury causes an inability to extend the thumb in a hitchhiker's sign?

Biology
1 answer:
Lena [83]3 years ago
7 0
The hitchhike sign represents the extension of the thumb and it is used to identify two different conditions: radial nerve or posterior interosseous nerve palsy and diastrophic dwarfism.
If there is radial nerve lesion then weakness of brachioradialis and finger flexion occurs. <span>If there is a posterior interosseous nerve lesion then weakness of finger extension occurs.</span>
You might be interested in
What is gene expression?
Alchen [17]

Answer:

it is the process of information encoded in a gene which is used to direct the assembly of a protein molecule.

3 0
2 years ago
What holds the DNA, and controls the functions of eukaryotic cells?
Mice21 [21]

Answer:

The nucleus

Explanation:

6 0
3 years ago
Read 2 more answers
You can digest starch but you cannot digest ce11u1οse. why?
lawyer [7]
<span>Cellulose is a lot stronger than starch. Starch is practically useless as a material, but celluose is strong enough to make fibers from, and hence rope, clothing, etc. Cellulose doesn't dissolve in water the way starch will, and doesn't break down as easily.
</span>Your body contains enzymes that break starch down into glucose to fuel your body. But we humans don't have enzymes that can break down cellulose.
8 0
3 years ago
Aretha's blood and urine tests at a recent checkup show that her levels of iron are low. She is surprised by the results because
Contact [7]

This suggests subclinical deficiency .

Subclinical deficiency is a condition in which a nutritional deficiency that is capable of having an effect on an individual’s health is not severe enough to produce typical deficiency signs and symptoms. Subclinical deficiency is discovered only by biochemical changes and it can change to clinical deficiency if it is not treated.


3 0
3 years ago
Why is an ecosystem never constant?
SVEN [57.7K]
Lots of factors play different kinds of roles on ecosystems.
Ecosystems are never constant because there are so many levels and layers of animals to each one. It's impossible for the headcount of each species to stay the same within an ecosystem when instances such as flooding, drought, poisoning, and hunting can take part. 
Let's say the hawk, who is over the bunny on the pyramid, gets poisoned by water. Now, there's fewer hawks, which means there's less predators to hunt the bunnies, hence causing more bunnies and even increasing the chance of overpopulation. 
The animals within ecosystems keep each other in check, but numbers are constantly going up and down as things happen. Natural disasters, pollution, and anything such as, effects the ecosystem, therefore it cannot remain constant. 
8 0
3 years ago
Other questions:
  • Quiet inspiration is __________, and quiet expiration is __________. quiet inspiration is __________, and quiet expiration is __
    7·1 answer
  • What do scientists call information collected from observations?
    10·1 answer
  • A height above sea level of a point on surface is known as its?
    6·2 answers
  • IZ
    14·2 answers
  • Name a structure which would be found in a green leaf cell of a plant, but not in a root cell
    5·2 answers
  • The primer for DNA synthesis is an RNA molecule formed by the enzyme ________________.
    12·1 answer
  • What general shape do water molecules have?
    11·1 answer
  • In the 1970s, public opinion favored cleaning up the environment. Since the 1980s, some members of Congress and industry leaders
    14·1 answer
  • 1. Bacteria after transduction contains :
    11·1 answer
  • In the past, smallpox, which is caused by a virus, was a common, and deadly disease. Now, people no longer get smallpox.
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!