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]
4 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]4 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
In a biological reaction, succinate dehydrogenase catalyzes the conversion of succinate to fumarate. The reaction is inhibited b
Rama09 [41]

Answer:

a. It is a competitive inhibitor.

Explanation:

A competitive inhibitor competes with the substrate for the active site of the enzyme. Binding of the competitive inhibitor to the active site of enzyme forms enzyme-inhibitor complex and does not allow the substrate to bind to the enzyme. This inhibits the reaction. However, the competitive inhibition is overcome by increasing the concentration of substrate around the enzyme to facilitate its binding to the enzyme's active site.

According to the given information, malonic acid competes with succinate for the active site of enzyme succinate dehydrogenase and inhibits the reaction. This inhibition is overcome by increasing the succinate concentration around the enzyme. This makes malonic acid a competitive inhibitor to succinate dehydrogenase.

3 0
3 years ago
(PLEASE HURRY IM TIMED)The leaf shown has a color pattern of green and white
sdas [7]
C. The green part, because it contains chlorophyll
3 0
2 years ago
.Soil and plants are not considered nitrogen reservoirs true or false?
s344n2d4d5 [400]
False the answer is it is false
4 0
3 years ago
Read 2 more answers
What Monomer units make up carbohydrates?
Irina-Kira [14]
The monomers of these organic groups are:<span>Carbohydrates - monosaccharides.Lipids - glycerol and fatty acids.Nucleic acids - nucleotides.Proteins - amino acids.</span>
7 0
4 years ago
When an ATP molecule is activated or used, what are the resulting molecules?
Sidana [21]
All living things require energy to function. While different organisms acquire this energy in different ways, they store (and use it) in the same way. In this section, we’ll learn about ATP—the energy of life. ATP is how cells store energy. These storage molecules are produced in the mitochondria, tiny organelles found in eukaryotic cells sometimes called the “powerhouse” of the cell.
4 0
3 years ago
Other questions:
  • How are epithelial cells arranged
    12·1 answer
  • What might happen if the magma under a mid ocean ridge cools?
    13·1 answer
  • Which statement is TRUE about meiosis? A. its a form of asexual reproduction. B. it is how cells reproduce themselves. C. It pro
    14·1 answer
  • 3 places in the human body flagellates may be found
    7·1 answer
  • HELP ASAP!!! WILL MARK BRAINLIEST!!!
    11·1 answer
  • What did you know for sure after one test? two test? three test?
    15·1 answer
  • In which structure would you find a nucleus?
    11·1 answer
  • Many organisms live in intertidal areas. However, fewer organisms live on high, rocky shores than in other intertidal environmen
    9·1 answer
  • Will give the brainliest Question 4 of 30
    8·1 answer
  • Can someone make me a vision statement for a nail salon pls
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!