Asked Nov 12, 2019

Define reflex and explain how reflexes differ from other motor actions.


Expert Answer

Step 1

An involuntary action:

It is an action that takes place without the sensible choice of an organism. When this action occurs precisely in response to some stimulus, then it is known as a reflex. Involuntary actions are contradictory to the voluntary actions which usually takes place because of choice.

Step 2

A reflex:

It is also known as a reflex action. It is an involuntary action. It is almost an immediate movement of the body in response to some stimulus.

A reflex is occurred by the neural pathways that are known as reflex arcs. Before the impulse reaches the brain, these reflex arcs start to act on that impulse.

Reflex arcs are of two types:

  1. The autonomic reflex arc that affects the inner organs.
  2. The somatic reflex arc that affects the affecting muscles.

For example:

When light acts as a stimulus, the pupil of the eye changes in size. Sudden jerky withdrawal of hand or leg when pricked by a pin.

Step 3

Motor control:

It is the control of movement in organisms which involves a nervous system. Motor control comprises of reflexes along with the directed movement.

Motor actions happens due to the influence of motor control. Because the motor–cogniti...

Want to see the full answer?

See Solution

Check out a sample Q&A here.

Want to see this answer and more?

Solutions are written by subject experts who are available 24/7. Questions are typically answered within 1 hour.*

See Solution
*Response times may vary by subject and question.
Tagged in




Related Biology Q&A

Find answers to questions asked by student like you
Show more Q&A

Q: For each of the following genotypes state whether you have a homozygous or heterozygous for each tra...

A: A genotype is referred to as the genetic makeup of an individual. A pair of different version of a g...


Q: I would like to know how you find the non-transcribed DNA sequence when you are given a 5 prime to 3...

A: The central dogma of molecular biology explains the flow of genetic information through the sequenti...


Q: What is alternative splicing of pre-mRNAs?

A: When a single pre- mRNA is spliced in more than one way to produce two or more than two mature mRNAs...


Q: State the purpose the trachea’s “C-shaped” cartilage ring.

A: The trachea, which is commonly called the windpipe, is a cartilaginous tube that connects the pharyn...


Q: Random Fusion of Gametes Someone out there Two mating individuals have the same kinds and same numbe...

A: Hi! Thanks for your question. But as you have posted multiple questions and have not mentioned which...


Q: Identify where and why decarboxylases, dehydrogenases, and kinases are employed in aerobic cellular ...

A: Aerobic cellular respiration is the process by which energy is produced in a cell. Energy is release...


Q: Drag each cell into the appropriate position to identify whether it is associated with antibody-medi...

A: Cell-mediated immunity is an immune response that does not involve antibodies. Rather, it is the act...


Q: Humans have 46 pairs of chromosomes while chimpanzees have 48 pairs. It is proposed that the common ...

A:     In gene level, chimpanzee and human being are about 98% same. But humans have 46 chromosomes and...


Q: In the process of hemostasis, which of the following converts fibrinogen to fibrin? Thrombin Thr...

A: Hemostasis is a natural process that stops blood loss in response to an injury. The three steps that...