Where is the cervical flexure?

Cervical flexure: the junction between the hindbrain and the spinal cord. Cephalic flexure: the flexure is in the midbrain.

What is cranial flexure?

the sharp, ventrally concave bend in the developing midbrain of the embryo. Synonym(s): cerebral flexure, cranial flexure, mesencephalic flexure.

Where is the pontine flexure found?

The cephalic flexure lies between the mesencephalon and rhombencephalon. The pontine flexure, which develops into the transverse rhombencephalic sulcus, separates the metencephalon and the myelencephalon. Furthermore, the cervical flexure lies between the rhombencephalon and the spinal cord.

What are the three swellings?

The three swellings derived from the first arch mesenchyme, the lateral lingual swellings and a median tuberculum impar, merge with each other to form the anterior two-thirds of the tongue. The second pharyngeal arch makes no contribution to the tongue (Fig.

What flexure means?

1 : the quality or state of being flexed : flexion. 2 : turn, bend, fold.

What does the forebrain develop into?

The forebrain controls body temperature, reproductive functions, eating, sleeping, and the display of emotions. At the five-vesicle stage, the forebrain separates into the diencephalon (thalamus, hypothalamus, subthalamus, and epithalamus) and the telencephalon which develops into the cerebrum.

What is sigmoid flexure?

noun. Zoology. an S-shaped curve in a body part. Also called sigmoid colon. an S-shaped curve of the large intestine between the descending colon and the rectum.

What is the function of cephalic flexure?

The cephalic flexure also known as the mesencephalic flexure, is the first flexure or bend that forms between the midbrain and hindbrain. The caudal part of the midbrain and the rostral part of the hindbrain makes up a mibrain-hindbrain boundary region known as the isthmic organizer.

Which flexure is responsible for the initiation of the torsion?

A third flexure, termed ‘thoracic flexure’, immediately precedes torsion, bending the embryonic neural tube in a direction opposite to the cranial and cervical flexures.

What is telencephalon?

The telencephalon (plural: telencephala or telencephalons) is the most anterior region of the primitive brain. Together with the diencephalon, the telencephalon develops from the prosencephalon, the primitive forebrain ¹. The inferior boundaries of the telencephalon are found at the diencephalon and brainstem ¹.

What is the Metencephalon?

The metencephalon is the embryonic part of the hindbrain. It differentiates into the pons and cerebellum, containing part of the fourth ventricle. … The metencephalon develops from the higher, or rostral half of the embryonic rhombencephalon.

What is a pontine?

Listen to pronunciation. (PON-teen) Having to do with the pons (part of the central nervous system, located at the base of the brain, between the medulla oblongata and the midbrain). Enlarge.

What is the forebrain?

By far the largest region of your brain is the forebrain (derived from the developmental prosencephalon), which contains the entire cerebrum and several structures directly nestled within it – the thalamus, hypothalamus, the pineal gland and the limbic system.

What is alar plate?

The alar plate (or alar lamina) is a neural structure in the embryonic nervous system, part of the dorsal side of neural tube, that involves the communication of general somatic and general visceral sensory impulses. The caudal part later becomes sensory axon part of the spinal cord.

What Does rostral and caudal mean?

Thus, anterior and posterior indicate front and back; rostral and caudal, toward the head and tail; dorsal and ventral, top and bottom; and medial and lateral, the midline or to the side.

What is a flexure in medical terms?

1. A curve, turn, or fold, such as a bend in a tubular organ: a flexure of the colon. 2. The act or an instance of bending or flexing; flexion. flex′ur·al adj.

Why flexural test is done?

The most common purpose of a flexure test is to measure flexural strength and flexural modulus. Flexural strength is defined as the maximum stress at the outermost fiber on either the compression or tension side of the specimen. Flexural modulus is calculated from the slope of the stress vs. strain deflection curve.

What is another term for flexure?

In this page you can discover 35 synonyms, antonyms, idiomatic expressions, and related words for flexure, like: elasticity, bounce, ductility, flexibility, flexibleness, give, malleability, malleableness, plasticity, pliability and pliableness.

What happens if the forebrain is damaged?

Some potential symptoms of frontal lobe damage can include: loss of movement, either partial (paresis) or complete (paralysis), on the opposite side of the body. difficulty performing tasks that require a sequence of movements. trouble with speech or language (aphasia)

What age does the forebrain develop?

At about day 32 of gestation, when the embryo is 5 to 7 mm long, the forebrain divides in the sagittal plane to give rise to the paired structures. Specific areas, including the hypothalamic, amygdala, hippocampal, and olfactory regions, can be defined at this time.

What is the role of the forebrain?

The forebrain is responsible for a variety of functions including receiving and processing sensory information, thinking, perceiving, producing and understanding language, and controlling motor function. The two major divisions of forebrain are the diencephalon and the telencephalon.

What is purpose of sigmoid flexure?

Definitions of sigmoid flexure. the s-shaped curve between the descending colon and the rectum. synonyms: sigmoid colon. type of: colon. the part of the large intestine between the cecum and the rectum; it extracts moisture from food residues before they are excreted.

What is sigmoid flexure used for?

Its function is to expel solid and gaseous waste from the gastrointestinal tract. The curving path it takes toward the anus allows it to store gas in the superior arched portion, enabling the colon to expel gas without excreting faeces simultaneously.

What does sigmoid colon pain feel like?

If there’s a problem in your sigmoid colon, you’ll probably feel abdominal pain. You might feel nauseated or lose your appetite, and you might experience either diarrhea or constipation. You might also notice blood in your stool.

What does the isthmus of the brain tube represent?

The isthmus therefore lies between the caudal midbrain and rhombomere 1 (r1). … The modern concept of the isthmus concept establishes a new caudal boundary for the midbrain region, which coincides with the caudal expression limit of the gene Otx2 in all vertebrates (Puelles, 2013; Puelles et al., 2013).

What is spiral cord?

The spinal cord is a long bundle of nerves and cells that extends from the lower portion of the brain to the lower back. It carries signals between the brain and the rest of the body. This article covers the key anatomy of the spinal cord and its functions. It also provides some information about spinal cord injuries.

What are the primary brain vesicles?

The cerebrum and brainstem arise from the rostral neural tube. These regions expand and constrict to form the three primary brain vesicles: Forebrain/Prosencephalon, Midbrain/Mesencephalon, and Hindbrain/Rhombencephalon.

What is torsion in an embryo?

The twisting of the embryo to the side is called torsion.

What is the source of development of the large intestine epithelium?

Specifically, the intestinal epithelium constitutes a constantly developing tissue, deriving from the progenitor stem cells at the bottom of the intestinal crypt. Epithelial differentiation strongly depends on the cross- talk with the adjacent mesoderm.

What is the diameter of the large intestine?

about 3 inches The large intestine (colon or large bowel) is about 5 feet long and about 3 inches in diameter. The colon absorbs water from wastes, creating stool.