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This article contains a list of organs in the human body. It is widely believed that there are 79 organs (this number goes up if you count each bone and muscle as an organ on their own, which is becoming a more common practice [1] [2]); however, there is no universal standard definition of what constitutes an organ, and some tissue groups' status as one is debated. [3]
SystemSubsystemBody PartsOrgansMusculoskeletalMusculoskeletalMusculoskeletalMusculoskeletalMuscles- Thalamus
- Hypothalamus
- Pituitary Gland
- Hippocampus
- Amygdala
- Papez Circuit and The Limbic System
- Basal Ganglia
The thalamus is the gateway to the cerebral cortex; it is the major sensory relay station of the brain. The two thalami are said to kiss across the third ventricle, resulting in the thalamic interconnexus. The lateral geniculate and medial geniculate nuclei are important nuclei that receive visual and auditory information respectively, before it is...
This is the region of the brain that lies anterior and inferior to the thalami. It releases small concentrations of hormones that stimulates the pituitary gland to release hormones. These hormones enter the bloodstream and influence the endocrine organs of the body e.g. thyroid gland, adrenal gland, gonads etc. Take a look at the videos, illustrati...
This is the master endocrine gland of the human body. It sits in the sella turcica(meaning Turkish saddle, which it resembles). The anterior and posterior clinoid processes of the skull project around it, giving it the appearance of a four post bed. The sella turcica is subdural; found between the arachnoid mater and dura mater. The pituitary gland...
This structure is named after what is resembles; a seahorse when seen in cross section. It is involved in the formation of episodic memories, emotions (as part of the limbic system), and spatial navigation. Since it lies adjacent to the parahippocampal gyrus in the medial temporal lobe, it is also important in declarative memory formation. Medial t...
This is the ‘danger detector’ and lies anterior to the hippocampus in the medial temporal lobe. It receives the olfactory input and also receives descending cortical input.
This is said to be the main pathway for the control of emotional expression. The loop involves the parahippocampal gyrus, which sends information to the entorhinal cortex in the medial temporal lobe. This then sends information to the subiculum via the hippocampus. The subiculum then connects with the mammillary bodies via the fornix, and then send...
These are nuclei that lie in the deep in the cerebral cortex, and have a role in cognition, movement, and emotion. The caudate nuclei(involved in the motor loop) lie in the wall of the third ventricle; along their course they form a large c-shape in profile. It lies superolateral to the thalamus in cross section. The motor component is known as the...
Nov 12, 2024 · Some organs belong to more than one organ system. The pancreas, for example, can be considered a part of the digestive system because it secretes enzymes that help the body break down fat, protein, and starch. It is also part of the endocrine system because it produces hormones that help regulate blood sugar.
Sep 30, 2012 · This is called the master body system, as it controls all the other organ systems of the body. The nervous system regulates whole-body physiology, functions, and movements. It has a brain, spinal cord, and somatic and autonomic nerves (sympathetic and parasympathetic nervous systems).
The 11 major organ systems of the human body. Spaces in the body called body cavities, and the organs they hold and protect. The tissues and fluid that protect the brain and spinal cord. How homeostasis is maintained to keep the body in a relatively steady state, and the problems that can be caused by loss of homeostasis, such as diabetes.
Human Body Systems. Organs of the human body are commonly grouped into eleven systems. Each body system includes organs and structures that serve a common purpose. The systems are highly interdependent, working together to sustain life and enable interaction with the surrounding environment. Cardiovascular
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Nov 3, 2023 · Small veins, called venules, leave from capillaries and gradually increase their lumen on the way to the heart to end as veins.There is a certain histological difference between arteries and veins, but their main functional difference reflects the direction in which they conduct blood: the arteries convey blood from the heart to the periphery, whereas the veins convey blood from the periphery ...
