What is cervical flexure?

Medical Definition of cervical flexure : a ventral bend in the neural tube of the vertebrate embryo marking the point of transition from brain to spinal cord.

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.

Where is the cervical flexure?

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

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 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 brain flexure?

cephalic flexure the curve in the mid-brain of the embryo. cervical flexure a bend in the neural tube of the embryo at the junction of the brain and spinal cord. colic flexure, left the angular junction of the transverse and descending colon.

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.

Is a medulla oblongata?

The medulla oblongata or simply medulla is a long stem-like structure which makes up the lower part of the brainstem. It is anterior and partially inferior to the cerebellum. …

Medulla oblongata
Section of the medulla oblongata at about the middle of the olivary body
Part of Brain stem
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What is the Metencephalon?

The metencephalon (see Fig. 3.2) is the embryonic portion of the hindbrain. It differentiates into the pons and cerebellum, and contains part of the fourth ventricle. … By the third month, the metencephalon has become the pons and cerebellum.

Which is the brain stem?

The brainstem (or brain stem) is the posterior stalk-like part of the brain that connects the cerebrum with the spinal cord. In the human brain the brainstem is composed of the midbrain, the pons, and the medulla oblongata. …

Parts Medulla, Pons, Midbrain
Latin truncus encephali
MeSH D001933

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 this cerebrum?

(seh-REE-brum) The largest part of the brain. It is divided into two hemispheres, or halves, called the cerebral hemispheres. Areas within the cerebrum control muscle functions and also control speech, thought, emotions, reading, writing, and learning.

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 name of the flexure that lies between the transverse colon and the descending colon?

splenic flexure The left colic flexure or splenic flexure (as it is close to the spleen) is the sharp bend between the transverse colon and the descending colon.

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 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. flexural 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.

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Is forebrain and cerebrum same?

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.

Is the medulla in the forebrain?

The brain works as a single organ but is divided into areas of special expertise and function. The forebrain, midbrain and hindbrain make up the three major parts of the brain. … The hindbrain, also referred to as the brainstem, is made of the medulla, pons, cranial nerves, and back part of the brain called cerebellum.

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)

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 an oblongata?

: the part of the vertebrate brain that is continuous posteriorly with the spinal cord and that contains the centers controlling involuntary vital functions see brain illustration.

What are the neural crest cells?

Neural crest cells (NCC) are multipotent cells induced at the border of the neural plate that subsequently migrate throughout the embryo and later differentiate into multiple cell types contributing to most of the peripheral nervous system and the cranio-facial cartilage and bones, as well as pigment and endocrine …

What is the cauda equina?

The cauda equina is the sack of nerve roots (nerves that leave the spinal cord between spaces in the bones of the spine to connect to other parts of the body) at the lower end of the spinal cord. These nerve roots provide the ability to move and feel sensation in the legs and the bladder.

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What is the medulla?

Your medulla oblongata is located at the base of your brain, where the brain stem connects the brain to your spinal cord. It plays an essential role in passing messages between your spinal cord and brain. It’s also essential for regulating your cardiovascular and respiratory systems.

What is the name of the bones that protect the spinal cord?

Vertebrae: The spine has 33 stacked vertebrae (small bones) that form the spinal canal. The spinal canal is a tunnel that houses the spinal cord and nerves, protecting them from injury. Most vertebrae move to allow for a range of motion. The lowest vertebrae (sacrum and coccyx) are fused together and don’t move.

What is the inferior olive?

The inferior olivary nucleus (ION), is a structure found in the medulla oblongata underneath the superior olivary nucleus. In vertebrates, the ION is known to coordinate signals from the spinal cord to the cerebellum to regulate motor coordination and learning.

Where is Decussation of pyramids?

point at the junction of the medulla and spinal cord where the motor fibers from the medullary pyramids cross the midline. The fibers then continue into the spinal cord primarily as the corticospinal tract.

What are pyramids in the medulla?

Anatomical Parts The medullary pyramids are paired white matter structures of the brainstem’s medulla oblongata that contain motor fibers of the corticospinal and corticobulbartracts known together as the pyramidal tracts. The lower limit of the pyramids is marked when the fibers cross (decussate).