Human Brain: Facts, Functions & Ana

Human Brain: Facts, Functions & Anatomy
he human brain is the command center for the human nervous system. It receives input from the sensory organs and sends output to the muscles. The human brain has the same basic structure as other mammal brains, but is larger in relation to body size than any other brains.
Facts about the human brain
• The human brain is the largest brain of all vertebrates relative to body size
• It weighs about 3.3 lbs. (1.5 kilograms)
• The brain makes up about 2 percent of a human's body weight
• The cerebrum makes up 85 percent of the brain's weight
• It contains about 86 billion nerve cells (neurons) — the "gray matter"
• It contains billions of nerve fibers (axons and dendrites) — the "white matter"
• These neurons are connected by trillions of connections, or synapses
Anatomy of the human brain
The largest part of the human brain is the cerebrum, which is divided into two hemispheres. Underneath lies the brainstem, and behind that sits the cerebellum. The outermost layer of the cerebrum is the cerebral cortex, which consists of four lobes: the frontal lobe, the parietal lobe, the temporal lobe and the occipital lobe. [Related: Nervous System: Facts, Functions & Diseases]
Like all vertebrate brains, the human brain develops from three sections known as the forebrain, midbrain and hindbrain. Each of these contains fluid-filled cavities called ventricles. The forebrain develops into the cerebrum and underlying structures; the midbrain becomes part of the brainstem; and the hindbrain gives rise to regions of the brainstem and the cerebellum.
The cerebral cortex is greatly enlarged in human brains, and is considered the seat of complex thought. Visual processing takes place in the occipital lobe, near the back of the skull. The temporal lobe processes sound and language, and includes the hippocampus and amygdala, which play roles in memory and emotion, respectively. The parietal lobe integrates input from different senses and is important for spatial orientation and navigation.
The brainstem connects to the spinal cord and consists of the medulla oblongata, pons and midbrain. The primary functions of the brainstem include: relaying information between the brain and the body; supplying some of the cranial nerves to the face and head; and performing critical functions in controlling the heart, breathing and consciousness.
Between the cerebrum and brainstem lie the thalamus andhypothalamus. The thalamus relays sensory and motor signals to the cortex and is involved in regulating consciousness, sleep and alertness. The hypothalamus connects the nervous system to the endocrine system — where hormones are produced — via the pituitary gland.
The cerebellum lies beneath the cerebrum and has important functions in motor control. It plays a role in coordination and balance, and may also have some cognitive functions.
Left brain vs. right brain
The human brain is divided into two hemispheres, the left and right, connected by a bundle of nerve fibers called the corpus callosum. The hemispheres are strongly, though not entirely, symmetrical. The left brain controls all the muscles on the right-hand side of the body; and the right brain controls the left side. One hemisphere may be slightly dominant, as with left- or right-handedness.

Kết quả (Anh) 1:

Human Brain: Facts, Functions & Anatomythe he human brain is the command center for the human nervous system. It receives input from the sensory organs and sends output to the muscles. The human brain has the same basic structure as other mammal brains, but is larger in relation to body size than any other brains.Facts about the human brain• The human brain is the largest brain relative to body size of all vertebrates• It weighs about 3.3 lbs. (1.5 kilograms)• The brain makes up about 2 percent of a human's body weight• The cerebrum makes up 85 percent of the brain's weight• It contains about 86 billion nerve cells (neurons) — the "gray matter"• It contains billions of nerve fibers (insulated with myelin, and dendrites) — the "white matter"• These neurons are connected by trillions of connections, or synapsesAnatomy of the human brainThe largest part of the human brain is the cerebrum, which is divided into two hemispheres. Underneath lies the brainstem, and behind that sits the cerebellum. The outermost layer of the cerebrum is the cerebral cortex, which consists of four lobes: frontal lobe, parietal lobe, the the, the temporal lobe and the occipital lobe. [Related: Nervous System: Facts, Functions & Diseases]Like all vertebrate brains, the human brain develops from three sections known as the forebrain, midbrain and hindbrain. Each of these contains fluid-filled cavities called ventricles. The forebrain develops into the cerebrum and underlying structures; the midbrain becomes part of the brainstem; and the hindbrain gives rise to regions of the brainstem and the cerebellum.The cerebral cortex is greatly enlarged in human brains, and is considered the seat of complex thought. Visual processing takes place in the occipital lobe, near the back of the skull. The temporal lobe processes sound and language, and includes the hippocampus and amygdala, which play roles in memory and emotion, respectively. The parietal lobe integrates input from different senses and is important for spatial orientation and navigation.The brainstem connects to the spinal cord and medulla oblongata medulla consists of the pons, and midbrain. The primary functions of the brainstem include relaying information between the brain and the body; supplying some of the cranial nerves to the face and head; and performing critical functions in controlling the heart, breathing and consciousness.Between the cerebrum and the brainstem lie the thalamus andhypothalamus. The thalamus relays sensory and motor signals to the cortex and is involved in regulating consciousness, sleep and alertness. The hypothalamus connects the nervous system to the endocrine system — where hormones are produced — via the pituitary gland.The cerebellum lies beneath the cerebrum and has important functions in motor control. It plays a role in coordination and balance, and may also have some cognitive functions.Left brain vs. right brainThe human brain is divided into two hemispheres, the left and right, connected by a bundle of nerve fibers called the corpus callosum. The hemispheres are strongly, though not entirely, symmetrical. The left brain controls all the muscles on the right-hand side of the body; and the right brain controls the left side. One hemisphere may be slightly dominant, as with left-or right-handedness.

Kết quả (Anh) 2:

Human Brain: Facts, Functions & Anatomy
human brain is the command he center for the human nervous system. It receives input from the Sensory Organs and sends output to the muscles. The human brain has the same basic structure as other mammal brains, but is larger in relation to body size any other coal brains.
Facts about the human brain
The human brain • Is The largest brain of all vertebrates relative to body size
• It weighs about 3.3 lbs. (1.5 kilograms)
• The Brain Makes up about 2 percent of a human's body weight
• The cerebrum Makes up 85 percent of the brain's weight
• It contains about 86 Billion nerve cells (neurons) - the "gray matter"
• It contains billions of nerve fibers (axons and dendrites) - the "white matter"
• These neurons are connected by trillions of connections, or synapses
of the human brain Anatomy
The largest part of the human brain is the cerebrum, Divided into two hemispheres mà. Underneath lies the Brainstem, and behind the cerebellum sits có. The outermost layer of the cerebrum is the cerebral cortex, mà Consists of four lobes: the frontal lobe, parietal lobe the, the temporal lobe and the occipital lobe. [Related: Nervous System: Facts, Functions & Diseases]
Like all vertebrate brains, the human brain develops from three sections known as the forebrain, midbrain and hindbrain. Each contains fluid-filled of những gọi ventricles cavities. The forebrain develops cerebrum and underlying structures vào; Becomes the part of the Brainstem midbrain; and the hindbrain Gives rise to vùng of the Brainstem and the cerebellum.
The cerebral cortex is greatly enlarged in human brains, and is Considered the seat of complex thought. Visual processing takes place in the occipital lobe, near the back of the skull. The temporal lobe processes sound and language, and includes the hippocampus and amygdala, mà play roles in memory and emotion, respectively. The parietal lobe khác Integrates input from senses and spatial orientation is Important for and navigation.
The spinal cord Brainstem connects to the medulla oblongata and Consists of the, Pons and midbrain. The primary functions of the Brainstem include: relaying information the brain and the body giữa; some of the cranial nerves supplying to the face and head; Performing and controlling critical functions in the heart, breathing and consciousness.
Between the cerebrum and the thalamus andhypothalamus Brainstem cork. The thalamus relays sensory and motor signals to the cortex and is Involved in Regulating consciousness, sleep and alertness. The hypothalamus connects the nervous system to the endocrine system - where hormones are Produced - via the pituitary gland.
The cerebellum lies beneath the cerebrum and in motor control has trọng functions. It plays a role in Coordination and balance, and unfortunately am also have some Cognitive functions.
Left Brain vs. Right Brain
The human brain is Divided into two hemispheres, the left and right, connected by a bundle of nerve fibers corpus callosum gọi the. The hemispheres are Strongly, though not entirely, symmetrical. The left brain controls the muscles on the right all-hand side of the body; and the right brain controls the left side. One hemisphere lẽ slightly dominant, as left- or right-handedness with.