Patellar reflex

Patellar reflex

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

Biologija

Raktiniai žodžiai

Patellar refleksas, Besąlygiškas refleksas, Nugaros smegenų refleksas, Plexor, Refleksinis lankas, Raumenų velenas, Extensor raumenys, Jutimo nervų pluoštai, Varikliniai pluoštai, Nugaros smegenys, Variklio galinė plokštelė, Postulinis refleksas, žmogus, biologija

Susiję elementai

Vaizdai

Susiję elementai

The withdrawal reflex

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

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.

Knee joint

The knee joint is made up by the femur, the tibia and the kneecap.

Nervous system

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

Neurons, nervous tissue

Neurons are cells specialised for transmitting electric signals.

Žmogaus kūnas (vyro)

Šioje animacijoje vaizduojamos svarbiausios žmogaus kūno sistemos.

Ausis ir klausos mechanizmas

Ausys oro vibracijas paverčia elektros signalais, kurie po to apdorojami smegenyse.

Bones of the upper limbs

Bones of the upper limbs form the pectoral girdle and the arms.

Human muscles

Skeletal muscles form the active part of the locomotor system: they move the bones they are attached to.

Layers of the skin; cutaneous senses

The skin is the soft outer covering of our body, its three layers are the epidermis, the dermis and the hypodermis.

Medical conditions of the spine

Scoliosis is a medical condition in which a person's spine has a lateral deviation.

Muscles of the upper arm

The arms are moved by flexor and extensor muscles.

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.

Synaptic transmission

Neurons transmit electrical signals via chemical and electrical synapses.

The human brain

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

The skull and the spine

The two main parts of the central nervous system, the brain and the spinal cord are protected by the skull and the spinal column.

Types of bone articulations

Human bones are joined together by cartilaginous or synovial joints, sutures or they can fuse together.

Types of synovial joints

Synovial joints can be categorised by the direction of movement they allow.

Bones of the lower limbs

Bones of the lower limbs are connected to the trunk by the pelvis.

Muscle tissues

The three types of muscle found in the human body are the smooth, the striated and the cardiac muscle.

Structure of skeletal muscles

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

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