Week 7 Embryonic Development

<p>To ensure proper blood flow direction (A)</p> Signup and view all the answers

<p>To remove excess tissue between fingers (C)</p> Signup and view all the answers

<p>It rotates 180 degrees counterclockwise (B)</p> Signup and view all the answers

<p>Duodenum, jejunum, and ileum (B)</p> Signup and view all the answers

<p>They become nostrils and nasal cavities (B)</p> Signup and view all the answers

<p>Thickened ridges where fingers will form (C)</p> Signup and view all the answers

<p>Caudal limb (D)</p> Signup and view all the answers

Structures in the embryo that form the face, neck, and throat, containing tissues that develop into muscles, bones, and nerves of the face and neck.

Small depressions on the front of the face that become the nostrils and nasal cavities, surrounded by mesenchyme (connective tissue) that forms the nasal structure.

The maxillary processes form the upper jaw and cheeks, while the mandibular processes merge to form the lower jaw and chin, shaping the mouth and face.

The right and left atria of the heart are separated by two walls: the septum primum and septum secundum. The foramen ovale allows blood to bypass the lungs, which are not functional yet.

The ventricles (lower chambers of the heart) are divided into right and left chambers by the interventricular septum, ensuring blood flows correctly.

The ends of the upper limb buds flatten into paddle-like structures called hand plates, the earliest forms of hands.

Thickened ridges in the hand plates where fingers will form.

Programmed cell death that removes tissue between the digital rays to separate the fingers.

The midgut, which grows rapidly, temporarily bulges into the umbilical cord due to the abdomen being too small.

The upper part of the midgut loop that develops into the small intestine (duodenum, jejunum, ileum), responsible for digestion and nutrient absorption.