Sensitivity of slow fibers of mixed muscles of Testudo horsfieldi and Agama caucasica to cholinomimetic drugs were investigated by the cumulative concentration -- action curve method. These muscles, like the rectus abdominis muscle of frogs, are most sens...

... Title : ACTION OF PYRIDINE-2-ALDOXIME METHOCHLORIDE (PAM) ON THE RECTUS ABDOMINIS MUSCLE OF THE FROG,. ...

... TRANSMISSION. I. EFFECTS OF 2-PAM AND EA 1814 ON THE FROG RECTUS ABDOMINIS MUSCLE PREPARATION. Corporate ...

Most mammals possess stamina because their locomotor and respiratory (i.e., ventilatory) systems are mechanically coupled. These systems are decoupled, however, in bottlenose dolphins (Tursiops truncatus) as they swim on a breath hold. Locomotion and ventilation are coupled only during their brief surfacing event, when they respire explosively (up to 90% of total lung volume in approximately 0.3 ...

Most mammals possess stamina because their locomotor and respiratory (i.e., ventilatory) systems are mechanically coupled. These systems are decoupled, however, in bottlenose dolphins (Tursiops truncatus) as they swim on a breath-hold. Locomotion and ventilation are coupled only during their brief surfacing event, when they respire explosively (up to 90% of total lung volume in approximately 0.3s) ...

Rectus abdominis muscle strains are common and debilitating injuries among competitive tennis players. Eccentric overload, followed by forced contraction of the non?dominant rectus abdominis during the cocking phase of the service motion is the accepted injury mechanism. A tennis?specific rehabilitation program emphasising eccentrics ...

SummaryThe abdominal wall is a composite of muscles which are important for mechanical stability of the spine and pelvis. Tremendous clinical attention is given to these muscles, yet little is known about how they function in isolation or how they interact with one another. Given the morphological, vascular, and innervation complexities associated with ...

In an attempt to decrease donor-site morbidity for rectus abdominis muscle harvest during free tissue transfer, we developed a technique of minimally invasive harvest. The da Vinci Surgical System (Intuitive Surgical, Sunnyvale, CA) was used in two cadavers for dissection and harvest of four rectus abdominis ...

Although abdominal perforator flaps based on a cutaneous branch of the deep inferior epigastric artery (DIEP flaps) have many advantages, preparing these flaps is technically difficult and requires great skill, especially as the portion of the artery running under the anterior rectus abdominis sheath must be operated upon "blind". To allow easier preparation and elevation of a ...

We present a case of a failed bipedicled (unilateral rectus flap with superior epigastric pedicle preserved and inferior epigastric vessels anastomosed to the thoracodorsal trunk as the second pedicle) transverse rectus abdominis muscle flap that had compromised the dominant pedicle of the latissimus dorsi muscle. A salvage procedure ...

The volume occupied by the extracellular space has been investigated in six types of voluntary muscles: sartorius (frog), semitendinosus (frog), tibialis anticus longus (frog), iliofibularis (frog), rectus abdominis (frog), and diaphragm (rat). With the a...

This study investigated the effects of age and inactivity due to being chronically bedridden on atrophy of trunk muscles. The subjects comprised 33 young women (young group) and 41 elderly women who resided in nursing homes or chronic care institutions. The elderly subjects were divided into two groups: independent elderly group who were able to perform activities of daily ...

Ventral hernia formation is a common complication of rectus abdominis musculocutaneous flap harvest. The site and extent of harvest of the flap are known contributing factors. Therefore, an accurate location of the arcuate line of Douglas, which marks the lower extent of the posterior wall of the rectus sheath, may be relevant before harvesting the flap. This study is aimed at ...

Examined the relative electromyographic (EMG) activity of upper and lower rectus abdominis (LRA) and external oblique (EOA) muscles during five abdominal strengthening exercises. Isometric and dynamic EMG data indicated that abdominal strengthening exercises activated various abdominal muscle groups. For the LRA and EOA ...

Context: Control of the trunk segment in landing has been implicated as a contributing factor to the higher incidence of anterior cruciate ligament injuries in females than in males. Investigating the sex-specific abdominal activation strategies during landing lends insight into mechanisms contributing to control of the trunk segment. Objective: To examine the abdominal activation ...

Objective To investigate associations between deep abdominal muscle activation and long-term pain outcome in chronic non-specific low back pain (LBP). Methods Recruitment of transversus abdominis and obliquus internus abdominis during the abdominal drawing-in manoeuvre was recorded by B-mode ultrasound and anticipatory onset of deep ...

Partial denervation of rat extensor digitorum longus and soleus muscles resulted in the appearance of denervated and innervated surface muscle fibers lying adjacent to one another. The denervated muscle fibers showed the typical signs of denervation while the innervated ...

Recurrent poststernotomy mediastinitis has significant morbidity and mortality. Reconstructive treatment begins with pectoral muscle or omental flaps. When these options are unavailable or inadequate, surgeons resort to internal mammary artery-based vertical rectus abdominis muscle flap. If the internal mammary artery is harvested for ...

The effect of swim exercise training on the human muscle fiber function was investigated in swimmers

Mosaicism is a mixed state, with two cell populations of different genetic origins caused by a cell mutation occurring after fertilization. In the present case, DNA analysis of lymphocytes led to a DMD diagnosis before death. Postmortem immunocytochemical and DNA analysis showed somatic mosaicism. At age 18 years, blood lymphocyte DNA analysis showed a DMD gene deletion, upstream from exon 7 to ...

A muscle strain is the stretching or tearing of muscle fibers. A muscle strain can be caused by sports, exercise, a ... something that is too heavy. Symptoms of a muscle strain include pain, tightness, swelling, tenderness, and the ...

The use of non-traditional exercise devices such as the Ab Lounge� has been promoted as being as effective as the traditional abdominal crunch in strengthening the abdominal musculature. Evidence for this is lacking, however. The purpose of this study was to compare the degree of activation of the upper and lower rectus abdominis using electromyography (EMG) during a ...

The deep inferior epigastric artery (DIEA) distributes musculocutaneous perforators in a uniform pattern that comprises "medial row" versus "lateral row" perforators, with these two rows having anatomical and functional differences. This pattern of two perforator rows is distributed from the DIEA regardless of the number of major DIEA trunks, with there variably being one to four major trunks. As ...

The goal of reconstruction of the skull base is to repair dural defects with a watertight seal and separate it from the nasopharynx and the exterior environment with well vascularised tissue. This prevents cerebro-spinal fluid leakage and secondary contamination leading to the potentially life threatening complications of meningitis or extradural abscess. Following large composite resections, ...

Contents: Behavior of the electrotonic potential in a frog's muscle fibers in dilatation; On the sliding mechanism of muscle contraction. (Author)

This is a light microscope image of intercalated discs and prominent sarcomeres cardiac muscle fibers stained with H&E.

This is a light microscope image of intercalated discs within cardiac muscle fibers stained with H&E.

BackgroundA Swiss ball is often incorporated into trunk strengthening programs for injury rehabilitation and performance conditioning. It is often assumed that the use of a Swiss ball increases trunk muscle activity. The aim of this study was to determine whether the addition of a Swiss ball to trunk bridging exercises influences trunk muscle ...

Human arm muscles are connected to the bones by things called tendons. Tendons are rope-like fibers that join muscles to bones and allow movement.