Marginal Ear Vein
Marginal Ear Vein - Related Videos
09:10
Ear Exam
0 Views •
2023
Source: Richard Glickman-Simon, MD, Assistant Professor, Department of Public Health and Community Medicine, Tufts University School of Medicine, MA This video describes the examination of the ear, beginning with a review of its surface and interior anatomy (Figure 1). The cartilaginous auricle consists of the helix, antihelix, earlobe, and tragus. The mastoid process is positioned just behind the earlobe. The slightly curving auditory canal ends at the tympanic membrane, which transmits sound...
06:53
Selective Harvesting of Marginating-hepatic Leukocytes
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Cited by 1 •
2016
Marginating-hepatic leukocytes exhibit unique characteristics and distinct immunological functions compared to other leukocyte populations. Here we describe a method for selective harvesting of this specific hepatic cell population, through forced perfusion of the liver of rats or mice. Marginating-hepatic leukocytes seem critical in determining susceptibility to hepatic-related diseases and metastases.
01:26
Margins and Profits Margins II
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2025
Financial metrics are essential for understanding a company's performance, helping businesses achieve profitability, and monitoring financial progress. These metrics guide sales targets, cost structures, and marketing effectiveness decisions. Setting target revenues ensures sales cover operating expenses and generate profits. For example, a business planning expansion might set higher sales targets to cover increased operational costs while maintaining profitability. The target revenue is a...
03:42
Isolation of Marginating Hepatic Leukocytes from a Mouse Liver
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2025
In this video, we demonstrate the isolation of marginating hepatic leukocytes from mouse liver by forced perfusion.
01:22
Margins and Profits Margins I
0 Views •
2024
Margins and profit metrics are crucial for businesses to evaluate their profitability and cost management. By comparing sales revenue to various costs, these metrics help companies make informed decisions about pricing and overall financial strategy. Gross margin represents a company's profit after covering the direct production costs. It highlights the efficiency of managing production. A higher gross margin means the company effectively converts sales into earnings after accounting for the...
FAQs
Because it lies close to the skin, the marginal ear vein can be approached without navigating deeply through surrounding tissues. This superficial position makes the vessel a practical landmark for locating peripheral circulation in laboratory animals. Its course along the ear’s outer edge also helps guide controlled needle placement, supporting more consistent access during sampling.
Needle placement and pressure serve different purposes in this setting. Controlled placement helps target the vessel rather than adjacent ear tissue, while gentle pressure supports management of the access site after sampling. Together, these actions can reduce handling-related injury and help preserve the quality and reliability of physiological measurements.
Prominence is an important practical consideration when identifying the marginal ear vein. In rabbits and other research animals with clearly prominent ear veins, the surface landmark can support more confident targeting. Treating prominence as a locating aid, rather than relying on needle placement alone, helps connect anatomy with controlled access and reduces avoidable handling-related injury.
A basic approach begins by identifying the vessel along the outer ear, then aligning needle placement with that landmark under controlled conditions. After access or collection, gentle pressure is applied at the site. This sequence connects anatomical identification with handling control, helping limit injury while producing a usable sample or peripheral vascular access.
Researchers may select this site when a study needs blood collection or peripheral vascular access in a laboratory animal with a prominent ear vein. Its accessibility supports physiological and biomedical investigations. The resulting sample or access point is most useful when anatomical identification and handling are performed carefully, because these factors influence study reliability and animal safety.
In biology, the vessel illustrates how external anatomy can guide experimental sampling. Its position provides a surface landmark that links the ear with underlying circulation, allowing researchers to plan access around a recognizable structure. This connection is relevant to studies requiring dependable blood samples or peripheral vascular access from rabbits and comparable research animals.