Table of Contents
What is vegetative reflex?
Vegetative reflexes are reflexes through the vegetative nervous system (sympathetic and parasympathetic). There is a large number of short and long vegetative reflexes which “close” the nervous circuit in the brain, the spinal cord, in the big nervous ganglia or in smaller peripheral ganglia.
What is the vegetative nerve?
The autonomic nervous system (ANS), formerly referred to as the vegetative nervous system, is a division of the peripheral nervous system that supplies smooth muscle and glands, and thus influences the function of internal organs.
What are two types of autonomic reflexes?
The role of visceral reflexes is to maintain a balance of function in the organ systems of the body. The two divisions of the autonomic system each play a role in effecting change, usually in competing directions. The sympathetic system increases heart rate, whereas the parasympathetic system decreases heart rate.
Why autonomic nervous system is called vegetative?
The autonomic nervous system (ANS) is also called the vegetative nervous system. It controls the involuntary functions and influences the activity of internal organs.
What is autonomic reflex?
Autonomic reflexes are unconscious motor reflexes relayed from the organs and glands to the CNS through visceral afferent signaling.
What are the two types of reflexes?
There are two types of reflex arcs: autonomic reflex arc (affecting inner organs) and somatic reflex arc (affecting muscles).
What are the 5 components of a reflex?
FIGURE 7-1 A reflex arc contains five fundamental components: 1, a receptor; 2, a sensory neuron; 3, one or more synapses in the CNS; 4, a motor neuron; and 5, a target organ, usually a muscle.
What is the difference between autonomic and somatic reflexes?
The main difference between the somatic and autonomic systems is in what target tissues are effectors. Somatic responses are solely based on skeletal muscle contraction. The autonomic system, however, targets cardiac and smooth muscle, as well as glandular tissue.
What is visceral reflex?
Visceral reflex is the reflex arc of the autonomic nervous system which produces a glandular or non-skeletal muscular response in internal organs like the heart, blood vessels, organs in the gastrointestinal tract, etc.
Is sneezing an autonomic reflex?
Introduction Sneezing is a coordinated protective respiratory reflex which occurs due to stimulation of the upper respiratory tract, particularly the nasal cavity.
What is the plantar reflex?
The plantar reflex is a reflex elicited when the sole of the foot is stimulated with a blunt instrument. The reflex can take one of two forms. In healthy adults, the plantar reflex causes a downward response of the hallux ( flexion ).
What is meant by vegetative reproduction?
Vegetative reproduction (also known as vegetative propagation, vegetative multiplication or vegetative cloning) is any form of asexual reproduction occurring in plants in which a new plant grows from a fragment of the parent plant or a specialized reproductive structure. Many plants naturally reproduce this way,…
What is vegetative propagation and why is it important?
Vegetative propagation also allows plants to avoid the costly and complex process of producing sexual reproduction organs such as flowers and the subsequent seeds and fruits.
What do you mean by vegetative growth?
In a sense, this process is not one of reproduction but one of survival and expansion of biomass of the individual. When an individual organism increases in size via cell multiplication and remains intact, the process is called “vegetative growth”.