lower rabbus

(noun)

The term for perineum often used in the UK. 

Related Terms

Examples of lower rabbus in the following topics:

  • Perineum

    • The term lower rabbus is used colloquially in the UK to describe this structure.

  • Veins of the Lower Limbs

    • The deep veins of the lower extremity have valves for unidirectional flow and accompany the arteries and their branches.
    • The popliteal vein, shown here in blue, extends from the hip to the knee and helps drain blood from the lower extremities.
    • The great saphenous vein and its tributaries, shown in blue, drain blood from the lower limbs.
    • Outline the flow of blood in the veins of the lower limbs

  • Organization of Motor Neuron Pathways

    • There are upper and lower motor neurons in the corticospinal tract.
    • These axons synapse with lower motor neurons in the ventral horns of all levels of the spinal cord.
    • These axons also synapse with lower motor neurons in the ventral horns.
    • The ventromedial lower motor neurons control the large, postural muscles of the axial skeleton.
    • The pyramidal tract is visible in red, and pyramidal decussation is labeled at lower right.

  • Brachial Plexus

    • The brachial plexus is formed by the four lower cervical spinal nerves and the first thoracic spinal nerve.
    • The brachial plexus is a network of nerve fibers that run from the spine that are formed by the ventral rami of the lower four cervical and first thoracic nerve roots (C5–C8, T1).
    • These roots merge to form three trunks: The superior or upper (C5–C6), the middle (C7), and the inferior or lower (C8, T1).
    • Each trunk then splits in two, to form six divisions: The anterior divisions of the upper, middle, and lower trunks and the posterior divisions of the upper, middle, and lower trunks.
    • The medial cord is simply a continuation of the anterior division of the lower trunk (C8, T1).

  • Tibia and Fibula (The Leg)

    • The tibia and the smaller fibula bones comprise the lower leg and articulate at the knee and ankle.
    • The tibia and fibula are the two bones of the lower leg.
    • The tibia, or shin bone, spans the lower leg, articulating proximally with the femur and patella at the knee joint, and distally with the tarsal bones, to form the ankle joint.
    • It is the major weight-bearing bone of the lower leg.
    • The fibula also spans the lower leg, although proximally it does not articulate with the femur or patella.

  • Sacral and Coccygeal Plexuses

    • The sacral plexus is the plexus of the three sacral spinal nerves (S2–S4) that arise from the lower back just above the sacrum.
    • The sacral plexus is a nerve plexus that provides motor and sensory nerves for the posterior thigh, most of the lower leg, the entire foot, and part of the pelvis.
    • The nerves forming the sacral plexus converge toward the lower part of the greater sciatic foramen and unite to form a flattened band from the anterior and posterior surfaces, from which several branches arise.
    • It is interconnected with the lower part of the sacral plexus.

  • Muscles that Cause Movement at the Knee Joint

    • The knee joint allows for movement of the lower leg relative to the thigh across the knee joint.
    • The popliteus muscle, located in the lower leg, is responsible for “unlocking” the knee joint after extension.
    • Actions: Extends the lower leg at the knee joint and stabilizes the patella.
    • Actions: Extends and laterally rotates at the hip, main action is flexing of the lower leg at the knee.
    • Posterior view of muscles of the lower leg, the popliteus can be seen at the top located behind the knee.

  • Organs of the Digestive System

    • The organs of the digestive system can be divided into upper and lower digestive tracts.
    • The upper digestive tract consists of the esophagus, stomach, and the small intestine; the lower tract includes all of the large intestine, the rectum, and anus.
    • The major organs within our digestive system can be split into two major segments of this tube: the upper gastrointestinal tract, and the lower gastrointestinal tract.
    • The exact dividing line between upper and lower tracts can vary, depending on which medical specialist is examining the GI tract.
    • Now thoroughly digested, with its nutrients absorbed along the path of the small intestine, what remains of our food gets passed into the lower GI tract.

  • Adjustments at High Altitude

    • At high altitude there is lower air pressure compared to a lower altitude or sea-level altitude.
    • Due to Boyle's law, at higher altitude the partial pressure of oxygen in the air is lower, and less oxygen is breathed in with every breath.
    • Along with alkalosis, these effects make up the symptoms of altitude sickness, which become worse during exercise at high altitudes (which involves more anaerobic respiration than at lower altitudes), but falls off during acclimatization.
    • This increase in red blood cells remains for a few weeks after one returns to lower altitude, so those who acclimatize to high altitude will experience improved athletic performance at lower altitudes.

  • Ischium

    • The ischium forms the lower and posterior portion of the hip bones of the pelvis.
    • The ischium forms the lower and back part of the hip bone .