Sentence examples for flaps of tissue from inspiring English sources

enations -- Flaps of tissue such as those found on psilophytes.

Human heart valves are flaps of tissue called leaflets or cusps.

The preservation of some of these leaves is sufficiently good to reveal the presence of ligules, tiny flaps of tissue known in some but not all lycophytes.

Like some trimerophytes, most zosterophylls were covered with enations, scale-like flaps of tissue that lacked vascularization and so were not true leaves.

A third type, Asteroxylon, had kidney-bean-shaped sporangia located along the stem rather than at its tip; small flaps of tissue along the stem may have increased its photosynthetic surface.

Asteroxylon (Figure 5.3c) (VG 1 12) is characterized by a lobed protostele, lateral, reniform, stalked sporangia, and an axis covered with enations (Figure 5.3c), multicellular flaps of tissue that emerge from the plant epidermis.

Often they are protected by the recurved leaf margin or a membranous flap of tissue (indusium).

A flap of tissue called the velarium is located along the underside of the bell.

The sori vary from round to linear and sometimes have a kidney-shaped, membranous protective flap of tissue (indusium).

They are covered with a membranous protective flap of tissue (indusium).

Thus, Dr. Nathan was perplexed when the patient returned five days later unhealed, with an unattached flap of tissue, severe bleeding and an infection.