Nervous system

Nervous system

The central nervous system consists of the brain and the spinal cord, the peripheral nervous system consists of nerves and ganglia.

Biology

Keywords

nervous system, brain, cerebrum, cranial nerve, cerebellum, brain stem, nerve, spinal cord, diencephalon, ganglion, skull, spine, human, biology

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Scenes

  • - The most developed part of the brain, which contains centers of high level brain functions such as speech, motor control, logical thinking, memory and certain emotions. The brain is divided into two hemispheres. The outer layer of the cerebrum is called cerebral cortex or gray matter, the inner part is called white matter, which has subcortical masses of cerebral gray matter called basal nuclei.
  • - There are mixed nerves which contain both sensory and motor fibers, but there are purely sensory and motor nerves too.
  • - It contains centers of crucial reflexes, such as coughing, sneezing, vomiting. It plays an important role in the control of blood pressure and breathing. It is the starting point of cranial nerves. The brain stem is composed of the medulla oblongata, the pons and the mesencephalon.
  • - It is located in the spinal column; this is where spinal nerves emerge. It also contains the centers of certain reflexes, such as the pain withdrawal reflex or the patellar reflex.
  • - Mixed nerves, they contain both sensory and motor fibers.

  • - The most developed part of the brain, which contains centers of high level brain functions such as speech, motor control, logical thinking, memory and certain emotions. The brain is divided into two hemispheres. The outer layer of the cerebrum is called cerebral cortex or gray matter, the inner part is called white matter, which has subcortical masses of cerebral gray matter called basal nuclei.
  • - There are mixed nerves which contain both sensory and motor fibers, but there are sensory or motor nerves too.
  • - It contains centers of important reflexes, such as coughing, sneezing, vomiting. It plays an important role in the control of blood pressure and breathing. It is the starting point of cranial nerves. The brain stem is composed of the medulla oblongata, the pons and the mesencephalon.
  • - It is located in the spinal column; this is where spinal nerves emerge. It also contains the centers of certain reflexes, such as the pain withdrawal reflex or the patellar reflex.
  • - Mixed nerves, they contain both sensory and motor fibers.

Related items

Anatomy of the spinal cord

The spinal cord is the part of the central nervous system running inside the spinal column from which spinal nerves branch out.

Parts of the human brain

The main parts of the human brain are the brain stem, the cerebellum, the diencephalon, and the cerebrum, which is divided into lobes.

The human brain

The main parts of the human brain are the brain stem, the cerebellum, the diencephalon, and the cerebrum.

The ventricular system and the main brain regions

This animation demonstrates the internal structure of the brain.

Cortical organization of speech

Producing speech requires the synchronized operation of several cortical centers.

Patellar reflex

The reflex triggered by the stretching of the thigh extensor muscle is the patellar reflex.

The withdrawal reflex

The withdrawal reflex is a spinal reflex that ensures moving away from potentially damaging stimuli.

Adrenaline (advanced)

Adrenaline, also known as epinephrine, is a hormone produced in our bodies in stressful situations and plays an important role in the fight-or-flight response.

Circulatory system

Systemic circulation carries oxygenated blood from the heart to the body, while pulmonary circulation carries oxygenated blood from the lungs to the heart.

Color vision deficiency

The inability to differentiate certain shades of color is called color vision deficiency.

Connective tissues

Connective tissues include loose and dense connective tissues, adipose tissue, blood, tendon and bone tissue.

Endocrine system

Glands of the endocrine system secrete hormones into the blood.

Human body (female)

This animation introduces the most important systems of the human body.

Hypothalamic-pituitary axis

The Hypothalamic-pituitary axis is the regulating center of our endocrine system.

Limbic system

The limbic system plays an important role in forming emotions and in learning.

Muscles of the upper arm

The arms are moved by flexor and extensor muscles.

Neurons, nervous tissue

Neurons are cells specialized for transmitting electric signals.

Structure of skeletal muscles

This animation demonstrates the fine molecular structure and mechanism of muscles.

Synaptic transmission

Neurons transmit electrical signals via chemical and electrical synapses.

The heart

The heart is the central pump of the cardiovascular system beating several billion times over our lifetime.

The Human Body - for Kids

This scene summarizes the main organs of the human body.

Vertebrate brain evolution

During the evolution of vertebrates the relative development of brain areas has changed.

Body parts

This animation introduces body parts on a male anatomical model.

Human body (male)

This animation introduces the most important organ systems of the human body.

Parts of the human body

This animation demonstrates the parts of the head, the torso and the limbs.

The sense of balance

The head's position and movement is detected by the inner ear.

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