Transverse and longitudinal sections through the sensory region of muscle spindles in the cat tenuissimus has shown no difference in the fine structure of sensory terminals lying on nuclear-bag or on nuclear-chain muscle fibers. Each terminal lies on a shallow trough of the intrafusal muscle fiber and is surrounded on its outer surface by basement membrane. A single terminal may encircle as muc...

The flagellum of a mammalian spermatozoon consists of an axoneme surrounded in distinct regions by accessory structures known as the fibrous sheath, outer dense fibers, and the mitochondrial sheath. Although the characterization of individual proteins has provided clues about the roles of these accessory structures, a more complete understanding of flagellar function requires the identification...

dependent protein kinase A 3 Summary The flagellum of a mammalian spermatozoon consists of an axoneme surrounded in distinct regions by accessory structures known as the fibrous sheath, outer dense fibers, and the mitochondrial sheath. While the characterization of individual proteins has provided clues about the roles of these accessory structures, a more complete understanding of flagellar fu...

The flagellum of a mammalian spermatozoon consists of an axoneme surrounded in distinct regions by accessory structures known as the fibrous sheath, outer dense fibers, and the mitochondrial sheath. Although the characterization of individual proteins has provided clues about the roles of these accessory structures, a more complete understanding of flagellar function requires the identification...

Among different types of controlling systems, the ON/OFF digital relative humidity control was used for measuring electrical properties of cashmere fibers to make the ambient relative humidity fixed. To achieve this goal the required hardware and software were designed and fabricated. The electrical resistance of fine and coarse hair cashmere fiber was measured by charge and discharge condenser...

THE LONGITUDINAL MUSCLE OF THE EARTHWORM BODY WALL IS INNERVATED BY NERVE BUNDLES CONTAINING AXONS OF TWO TYPES WHICH FORM TWO CORRESPONDING TYPES OF MYONEURAL JUNCTION WITH THE MUSCLE FIBERS TYPE I JUNCTIONS RESEMBLE CHOLINERGIC NEUROMUSCULAR JUNCTIONS OF VERTEBRATE SKELETAL MUSCLE AND ARE CHARACTERIZED BY THREE FEATURES: (a) The nerve terminals contain large numbers of spherical, clear, appro...