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
Oliga [24]
3 years ago
11

The iris in the human eye contracts and expands, controlling the amount of light that reaches the retina. What types of muscle c

ontrol this?To which skeletal system does the sternum belong?
Biology
1 answer:
docker41 [41]3 years ago
4 0

Answer:

1. sphincter muscle and dilator muscle

2. Axial skeleton

Explanation:

1.The iris in the human eye is responsible for controlling the exposure of of light that reaches the retina. The movement of iris is controlled by a muscles called sphincter muscle and dilator muscle. sphincter muscle constricts the pupil in bright light while dilator muscle expands the pupil.

2.  Sternum belongs to the axial skeleton, which is a long flat bone located in the central part of the chest. Axial skeleton consists of 80 bones and strenum is one of them. Axial skeleton functions to provide protection to vital organs such as brain, heart and lungs. Strenum functions to protect heart.

You might be interested in
Methylphenidate is prescribed for a 6-year-old boy with the diagnosis of attention deficit–hyperactivity disorder (adhd). the nu
lakkis [162]
Methylphenidate is a cerebral stimulant that can interfere with sleep, it should therefore not be administered within 6 hours of bedtime. It may also cause nausea, anorexia (eating disorder), and dry mouth, which interfere with appetite and adequate food intake; therefore it should be administered after the child has taken breakfast. It should be taken exactly as prescribed by the nurse or specialists and not as a needed basis.
7 0
4 years ago
Protect bacteria from unfavorable conditions
mrs_skeptik [129]
The likely answer here is spore coat. 

Several types of bacteria will form a spore when they are presented with unfavorable conditions. When conditions improve, the spore germinates and the bacteria continues to replicate.
8 0
4 years ago
Which describes tge process of a bacterial cell dividing to create two daughter cells
Yanka [14]
It is  binary fission process that is characterized by a bacterial cell dividing to create two daughter cells.
5 0
4 years ago
The most numerous WBCs that have multilobed nuclei and are very phagocytic are ________. Select one: a. monocytes b. eosinophils
Yakvenalex [24]

Answer:

c. neutrophils

Explanation:

The main characteristics of neutrophils  that made them different from other white blood cells is the multi-loped structure of  nucleus in neutrophils.

Also neutrophils  are different from other white blood cells as they are professional phagocytes and they respond by phagocytosis of microbes during the immune response.  

7 0
4 years ago
Mineral A is purple. Mineral B is black. Both minerals leave the same color streak. Which following statement is true?
Flauer [41]
The answer is D, sorry if incorrect
6 0
3 years ago
Other questions:
  • What term is used to describe an animal that eats only plants?
    12·2 answers
  • Which action by the nurse is appropriate when caring for an elderly client admitted to a healthcare facility?
    6·1 answer
  • What is homeostasis? What is an example of homeostasis?
    7·1 answer
  • Which answer best illustrates evolution by natural selection? A
    8·1 answer
  • Why don’t all water droplets fall to Earth?
    9·1 answer
  • John forgot to put on his jacket before going outside on a cold day. He starts to shiver. This is an example of which characteri
    8·1 answer
  • eosin Eosin is a red stain and methylene blue is blue. What should be the result of staining a bacterial smear with a mixture of
    12·1 answer
  • As seen from new york state, the noon sun is
    7·1 answer
  • Fatty acids usually have an even number of carbons in their structures. They are catabolized by a process called beta-oxidation.
    14·1 answer
  • What's something you liked or found interesting about any one of the episodes of the aquarium? (Make sure to write at least 4 se
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!