mammillary bodies
(noun)
Act as a relay for
impulses coming from the amygdalae and hippocampi.
Examples of mammillary bodies in the following topics:
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Limbic System
- Fornix: A white matter structure that carries signals from the hippocampus to the mammillary bodies and septal nuclei.
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Water Content in the Body
- In physiology, body water is the water content of the human body.
- It makes up a significant percentage of total body composition.
- The water in the body is distributed among various fluid compartments that are interspersed in the various cavities of the body through different tissue types.
- Body water is regulated largely by the renal and neuro-endocrine systems.
- There are many clinical methods to determine body water.
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Body Planes and Sections
- Body planes are hypothetical geometric planes used to divide the body into sections.
- The sagittal plane (lateral or Y-Z plane) divides the body into sinister and dexter (left and right) sides.
- It is typically a horizontal plane through the center of the body and is parallel to the ground.
- Body planes are used to describe anatomical motion in the X-Y-Z coordinate system that the body moves through.
- Anatomical change during embryological development is also described and measured with body planes.
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Tissues in Levels of Organization
- The human body is organized at several levels of scale that can each be examined.
- The human body has many levels of structural organization.
- Each tissue type has a characteristic role in the body:
- Each organ is a specialized functional center responsible for a specific function of the body.
- List the various levels of structural organization that make up the human body
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Thermoregulation
- If the body must cool down, the body vasodilates these blood vessels.
- This allows for our body to release a lot of body heat through radiation.
- The body also thermoregulates via the process of sweating (perspiration).
- In addition, our body thermoregulates using our hair.
- Finally, while technically not a thermoregulatory mechanism, the fat associated with our skin does help insulate our body and therefore increases body temperature as a result.
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Body Cavities
- Vertebrates have fluid-filled spaces called body cavities that contain the organs.
- By the broadest definition, a body cavity is any fluid-filled space in a multicellular organism.
- "The human body cavity," normally refers to the ventral body cavity because it is by far the largest one in volume.
- The dorsal cavity is a continuous cavity located on the dorsal side of the body.
- This is the most narrow of all body cavities, sometimes described as threadlike.
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Waste Management in Other Body Systems
- The liver also plays an important function in the management of body waste.
- It acts as a detoxification system for the body, processing and neutralizing drugs and toxins.
- While the liver may breakdown or neutralize waste in a different and safer form for the body, it doesn't directly remove the waste from the body.
- The lungs are responsible for the removal of gaseous waste from the body.
- The lungs are responsible for the removal of gaseous waste from the body.
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Sweat (Sudoriferous) Glands
- Sweat glands, also known as sudoriferous glands, are distributed over most of the body surface.
- Sweat glands, also called sudoriferous glands, are simple tubular glands found almost everywhere on our body.
- These are the true sweat glands in the sense of helping to regulate body temperature.
- This is because as the water in sweat evaporates, it takes body heat with it.
- These are also the glands largely responsible for body smells, as their excretions are converted by skin bacteria into various chemicals we associated with body odor.
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Directional Terms
- Superior and inferior (cranial and caudal) are used when referring to parts of the body which are toward an end of the body.
- In general, many structures of the human body are bilateral and symmetrical with the middle of the body, such as the lungs or the arms.
- Deep refers to structures closer to the interior center of the body.
- When describing appendages, the proximal end of the appendage connects the appendage to the body, while the distal end is away from the body.
- Identify the anatomical terms that define the human body in space
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Structural Diversity of Neurons
- A typical neuron consists of a cell body and neuronal processes such as dendrites and axon.
- Axons arise from a cone-shaped area of the cell body called axon hillock.
- Nerve impulses are generated in the axon and transmitted away from the cell body towards the synapse.
- The cell body is the major biosynthetic center of the neuron.
- A signal propagating down an axon to the cell body and dendrites of the next cell