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229501The digestive gland is the gland organ that can secretes the .
229502The digestive tract in sheep is a long tube.
229503The digestive system of sheep consists of and digestive glands.
229504The wall of the large intestine is similar to the structure of the small intestine. It is also composed of mucosa, submucosa, muscularis and serosa（）
229505Villi and microvilli decrease the mucosal surface area and contribute to digestion and absorption（）
229506The wall of the small intestine is divided into 4 layers: mucosa layer, submucosa layer, muscle layer and serosa layer（）
229507The duodenum is located in the right hypochondrium and waist. The initial part forms a sigmoid bend on the visceral surface of the liver and has a duodenal diverticulum（）
229508The muscular layer of the stomach is very strong and divided into three layers. The outer layer is incomplete longitudinal muscle（）
229509Fundic gland region is small and distribute along the greater curvature, which secretes gastric juice rich in hydrochloric acid and protease（）
229510Cardiac gland region of pig stomach is large and located from the left side of the stomach to the middle（）
229511The gastric mucosa is divided into non-glandular portion and glandular portion（）
229512The inlet of the stomach is called the cardia,and the outlet called the pylorus（）
229513The stomach of pig is a multi chamber mixed stomach lying right in front of the abdomen. Most of the stomach is in the left hypochondrium, a small part in the right hypochondrium（）
229514Pigs ingeste using their lips, tongues, and teeth. The primary digestion of the feed in the mouth completes with the assistance of the salivary glands（）
229515The upper lip of the pig is thicker and connects with the nose to form the snout. The lower lip is small and the oral fissure is wide（）
229516The exocrine part consists of cells of different sizes, similar to the small island, so it is called pancreatic island（）
229517The endocrine part of pancreas belongs to the digestive glands mianly secreting digestive enzymes, including trypsin, lipase, amylase etc.. （）
229518The pancreas is situated in the curvature of the duodenum and has a pancreatic duct running directly to the duodenum（）
229519The liver is not only secretes bile participating in digestion, but also is the metabolic center of the body（）
229520Intramural glands are glands that forms complete organs independent of the alimentary canal wall, such as the salivary glands, liver, pancreas（）
229521Outer glands are glands that are found in the walls of the digestive tract, such as the esophagus, glands, and stomach glands and intestinal gland（）
229522The anterior part of the rectum is narrow because of peritoneum covering. The posterior part is free from peritoneum and enlarged to form trectal ampulla （）
229523The colon is long and divided into the ascending, transverse and descending colon（）
229524The large intestine comprises three segments: the abomasum, the colon and the rectum. It is connected with the ileum and the anus（）
229525After the small intestine completes digestion and absorption, , the large intestine begins the final treatment–that is, digestion of cellulose, absorption of water, the formation of feces and so on （）
229526The small intestine consists of mucous membranes, submucosa tissues, sarcolemma and serosa（）
229527In the part of the jejunum, the pancreatic duct, hepatic duct, and bile duct enter the bowel cavity（）
229528The front of small intestine connects the pylorus of stomach, the back connects the cecum by the ileocecal orifice（）
229529The abomasum is located in the right hypochondrium and sword-like cartilaginous part, opposite to 8-12 rib（）
229530The omasum mucosa surface forms hundreds of leaves with different sizes and width. The leaves are divided into four grades. They are regularly arranged（）
229531The hole in the rumen connecting the esophagus is preventriculus（）
229532The fourth stomach of sheep no digestive glands in the stomach wall, which do not secrete gastric juice（）
229533The first three stomachs of sheep owns digestive gland, which can secrete gastric juice（）
229534The stomach of sheep is the complex stomach（）
229535The esophagus is divided into two segments, the head segment and the nest segment（）
229536The common channel for digestion and respiration is the pharynx（）
229537The tooth is the hardest organ in an animal and has the function of feeding and chewing（）
229538The tongue is composed of striated muscles. It is divided into three parts, the tip, the body and the rear（）
229539The lips of sheep is thin and flexible. There is a obvious longitudinal groove in the middle part of the upper lip. An area of hairless hair between two nostrils is known as nasoscope（）
229540The mouth is the initial part of the digestive organ（）
229541The liver isn’t the digestive gland（）
229542The digestive tract in sheep is a long muscular tube, only including the esophagus, stomach, small intestine, large intestine （）
229543The digestive system of sheep consists of digestive tract and digestive glands（）
229544Which description of the physical digestion of the digestive tract is wrong（）A.
229545Tolerant relaxation of the stomach is achieved by（）
229546The ion base generated by the action potential of the smooth muscle cells of the digestive tract is（）
229547The movement of the small intestine does not include（）
229548The main characteristics of the smooth muscle of the digestive tract wall are（）
229549The digestive glands of（）secrete pancreatic juice containing a variety of digestive enzymes.
229550The stomach of pig is a（） mixed stomach lying right in front of the abdomen. Most of the stomach is in the left hypochondrium, a small part in the right hypochondrium.
229551The（） is the largest gland, behind the diaphragm.
229552Intramural glands include（）
229553The most important part of digestion is （）
229554The （） is the unique in the four stomachs owning gland which secretes digestive juice.
229555the（） of the ox is t e smallest in the four stomach.
229556The （）omasum of sheep is the smallest in the four stomach.
229557The （） is in the front of other stomach and the shaped likes pear.
229558The （） volume is the largest, accounting for 80% of the total stomach volume.
229559The stomach of sheep belongs to the （） stomach
229560The pharynx is the common channel for （）
229561The mouth is connected to the pharynx by （）
229562The digestive tract including the （）
229563What are the components of a sheep’s digestive system（）
229564Smooth muscle consists of smooth muscle fibers,The muscle fibers were （）.
229565The skeletal muscle fibers are （）and multinucleated, and the myofibrils in the cytoplasm have striated stripes, so they are also called striated muscles.
229566Bone tissue is composed of （）and a large number of calcified mesenchymal cells (also called bone matrix).
229567According to the nature and quantity of the fiber in the matrix, the cartilage can be divided into three types, （）, elastic cartilage and fibrocartilage.
229568（）divides the animal into two equal parts.
229569The main difference between rough endoplasmic reticulum and smooth endoplasmic reticulum under electron microscope is whether there is （）on their surface.
229570（）are rich in ribonucleic acids and proteins, which are the main sites of protein synthesis.
229571（）is an important site for lipid synthesis.
229572The basic unit of animal body structure and function is （）.
229573There are three fiber components in loose connective tissue: （）, elastic fiber and reticular fiber.
229574Muscle tissue can be divided into three types according to their morphological structure, physiological characteristics and distribution: （）, smooth muscle and myocardium.
229575Muscle tissue consists of muscle cells. Muscle cells are thin and long, also called（）.
229576According to the morphology, structure and function of connective tissue, it is divided into （）, dense connective tissue, adipose tissue, reticular tissue, cartilage tissue, bone tissue, blood and lymph.
229577Neurites of the neuron protrude from the cell body. they are divided into two types: one is dendritic short process, there are more than one, called （）.
229578（）in the epithelial tissue is the most widely distributed epithelium.
229579there are four basic tissues in an animal’s body: epithelial tissue, connective tissue,（）, and nerve tissue.
229580Cell reproduction is carried out by cell division, mainly including three types: amitosis, mitosis and （）.
229581The nucleus is mainly composed of nuclear membrane, （）,nucleolus and chromatin.
229582according to the function of neurites, neurons can be divided into sensory neurons,（） and contact neurons.
229583Neurites of the neuron protrude from the cell body. they are divided into two types: one is thin and long single process, called （）.
229584the neuron is the abbreviation of nerve cell, which is composed of two parts: cell body and （）.
229585（） is a translucent gelatinous substance between the cell membrane and the nucleus.
229586The cell membrane is composed of phospholipid molecules and （）.
229587cell bodies of the neuron include （）, nucleus and cytoplasm.
229588The basic structure of an animal cell, including the cell membrane, cytoplasm, and （）。
229589The nucleus is generally located in the center of the cell, but also on one side. （）
229590Lysosome is an important “digestive organ” in cells.（）
229591All cells have mitochondria.（）
229592glial cells are helper cells in the nervous system that have a conductive function. （）
229593sensory neurons are also called efferent neurons. （）
229594The transitional epithelium is characterized by changes in the number of layers of epithelial cells and the morphology of cells with the contraction or expansion of organs. （）
229595The component of caryoplasm is similar to of the stroma of cytoplasm. （）
229596Nerve cells are long and have many projections that can conduct impulses.（）
229597Hyaline cartilage is distributed in auricle, epiglottis and eustachian tube. （）
229598Smooth muscle is mainly distributed in the tube wall and blood vessel wall of digestive, respiratory, urinary and other visceral organs. （）
229599single-layer columnar epithelium is distributed on the mucosal surface of stomach, intestine and uterus. （）
229600Like neurons, glial cells have the function of receiving stimulation and transmitting impulse. （）
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